Unit 6 Crossing Cultures (Grammar) 核心知识点精讲精练-2025-2026学年八年级英语下册单元全方位精练（新教材人教版）

该初中英语单元复习讲义围绕so...that..., unless, as soon as引导的状语从句构建语法知识体系，通过分类解析、对比表格等工具梳理结果、条件、时间状语从句的用法，涵盖so...that...与such...that...的区别、“主将从现”时态规则等重难点，呈现清晰的知识脉络。 讲义亮点在于分层练习设计，随学随练通过单项填空“The movie is so exciting that I want to watch it again”巩固基础，提升练习结合语法选择和翻译句子培养语言运用能力，对比辨析训练思维品质。分层设计帮助不同学生掌握语法，教师可据此实施精准教学，支持学生自主复习。

Unit 6 Crossing Cultures核心知识点精讲精练 2 (Grammar)（so...that...,unless,as soon as引导状语从句） 【主要内容】 · 【单元核心知识点精讲精练】每个单元按照教材安排分为Section A；Grammar和Section B三个部分。 · Grammar 部分精讲本单元的重点语法，讲解部分配有随学随练。 · Grammar 部分还设置了单元语法基础练习和单元语法提升练习，丰富多样的习题帮助学生更好地学习并掌握单元语法知识。 1、 单元语法解析 so...that...引导结果状语从句 1. so...that...引导让步状语从句 (1) so...that...表示“如此...以至于...”，引导结果状语从句。 (2) so是副词，修饰形容词、副词等，强调程度。that后引导的从句表示前面句子产生的结果。 He is so smart that he has solved all the problems. 他如此聪明，已经解决了所有的问题。 2. 其他结果状语从句 除so...that...外，so that；such...that...等也可以引导结果状语从句 (1) so that表示“因此；所以”，可以引导结果状语从句，位于主句后，可以用逗号隔开。that可以省略，此时变成了so引导的并列句。 so that也可以表示“以便，为了”，引导目的状语从句时，从句中常有can,could,may,might,will,等情态动词，从句位于主句后，且不用加逗号。 He explained it clearly, so that everyone was satisfied.他解释得很清楚因此大家都很满意。(结果状语从句) He must get up early that he can go to work on time.他必须早点起床,以便能按时上班。(目的状语从句) (2) such...that...表示“如此...以至于...”，such是形容词，其后跟名词或名词为中心词的短语。 He is such a lovely boy that everyone likes him. 他是如此可爱的男孩，每个人都喜欢他。 3. so...that...与such...that...用法区别 (1) so是副词，修饰形容词和副词等，引导结果状语从句时，其后接形容词或副词。 such是形容词，修饰名词等，引导结果状语从句时，其后接名词或名词为中心词的短语。 可参照以下结构： · so+adj./adv.+that... She runs so quickly that no one can catch up with her.她跑得如此快，以至于没人能追上上。 · such+(a/an)+adj.+n.+that It was such a hot day that we stayed at home.这是如此热的一天，以至于我们待在家里。 · so+形容词+a/an+单数名词+that从句 Lucy is so kind a girl that she is popular among the neighbours.露西是个如此善良的女孩，深受邻居们的喜爱。 (2) 名词前有many/much/few/little，表示“多；少”含义时，前面只用so，不用such。 There are so many people in the room that it's crowded. 房间里有如此多的人，以至于很拥挤。 4. so...that...与too...to.../enough to的互换 so...that...表示“如此…以至于…”，有时可以与 too...to...（太…而不能…）或 enough to（足够…以至于…）互换使用，但要注意含义的变化。 He is so short that he can't reach the shelf. = He is too short to reach the shelf.他太矮了，够不到架子。 is so strong that he can move the stone.= He is strong enough to move the stone.他足够强壮，能搬动这块石头。 [随学随练] 单项填空 1．The movie is ________ exciting ________ I want to watch it again. A．too; to B．enough; to C．such; that D．so; that 【答案】D 【详解】句意：这部电影太令人兴奋了，以至于我想再看一遍。 too; to太……而不能（too后接形容词，to后接动词原形，表示否定意义）；enough; to足够……可以做（enough置于形容词或副词之后，to后接不定式）；such; that如此……以至于（such后接名词短语，that后接从句）；so; that如此……以至于（so后接形容词或副词，that后接从句）。根据题干“exciting”是形容词，表示“如此令人兴奋以至于……”，应用so...that结构引导结果状语从句。 2．He reads ______ few books that he can’t tell stories to ______ little children. A．so; such B．such; such C．so; so D．such; so 【答案】A 【详解】句意：他读的书如此少，以至于他不能给这么小的孩子讲故事。 考查so和such的用法区别。在结果状语从句中，so用于修饰形容词或副词，such用于修饰名词或名词短语。第一个空后“few”是形容词，表示“少的”，因此用so修饰；第二个空后“little children”是名词短语，其中“little”表示“小的”，因此用such修饰。故选A。 3．It was ________ difficult a question that ________ people could answer it. A．so; few B．so; a few C．such; few D．such; a few 【答案】A 【详解】句意：这是一个如此难的问题，以至于几乎没有人能回答出来。 考查so的用法和不定代词辨析。so后面一般接形容词或副词，such后面一般接名词，difficult是形容词，第一个空填so。few表示“几乎没有”，带有否定意义，修饰可数名词复数；a few表示“有一些”，带有肯定意义，修饰可数名词复数。根据句意可知，此处表示“这个问题太难了，几乎没有人能回答出来”，第二个空应该用few。故选A。 4．There is ________ much information online ________ we must be careful to identify the truth. A．so; that B．such; that C．too; to D．very; that 【答案】A 【详解】句意：网上有如此多的信息，以至于我们必须小心辨别真相。 so...that...如此……以至于……；such...that...如此……以至于……；too...to...太……而不能……。根据空后的much可知，当名词前有much, many, few, little修饰时，应用so不用such；且后半句是完整从句，排除too...to...。 5．The box is ________ heavy for the little girl ________ carry. A．too; to B．so; that C．very; to D．enough; to 【答案】A 【详解】句意：这个箱子对这个小女孩来说太重了，以至于搬不动。 too…to…意为“太……而不能……”；so…that…意为“如此……以致于……”，后接从句；enough…to…意为“足够……能……”，enough修饰形容词时后置。根据The box is…heavy for the little girl…carry.可知，heavy是形容词，carry是动词原形，且句意表示否定含义，符合too…to…结构。 6．The little girl was _________ understand why we shouldn’t talk with food in our mouths until her mom explained it patiently again and again. A．so young that B．too young to C．young enough to D．young enough that 【答案】B 【详解】句意：这个小女孩太小了而不能理解为什么我们嘴里有食物时不应该说话，直到她妈妈耐心地一遍又一遍地解释。 so...that...和young enough that后需接从句，空后为动词原形understand，排除A、D；根据“until her mom explained it patiently”可知，小女孩起初无法理解，too...to...表否定含义，意为“太年幼而不能理解”；young enough to表肯定含义，不符合逻辑，排除C。 7．In many countries, people are _________ follow others instead of pushing past them when walking on crowded streets. A．too polite to B．so polite that C．polite enough to D．polite enough that 【答案】C 【详解】句意：在许多国家，当走在拥挤的街道上时，人们足够有礼貌去跟随他人而不是从他们身边挤过去。 too... to...表示否定含义，意为太……而不能……；so... that...后接从句；adj+enough to do表示肯定含义，意为足够……去做某事。根据句意，人们跟随他人是礼貌的行为，且follow为动词原形，符合enough to 结构。 8．This is ________ an improper question ________ you shouldn’t ask it in public. A．so; that B．such; that C．too; to D．enough; to 【答案】B 【详解】句意：这是一个如此不恰当的问题，以至于你不应该在公共场合问它。 so...that...如此……以至于……（so修饰形容词或副词）；such...that...如此……以至于……（such修饰名词短语）；too...to...太……而不能……（to后接动词原形）；enough to...足够……以至于……（to后接动词原形）。“an improper question”为名词短语，且“you shouldn’t ask it in public”是完整的句子，应用such...that...结构，that引导结果状语从句。 按要求完成句子 1．The cake is delicious enough to eat. (改为 so…that…) The cake is ________ ________ ________ I want to eat it. 【答案】 so delicious that 【详解】句意：这蛋糕足够美味，可以吃。根据句意可知可以转化为“蛋糕如此美味，以至于我很想吃它”，结构是“so+形容词+that+结果状语从句”，delicious是表语。故填so；delicious；that。 2．The girl is polite enough to help the old man.（改为同义句） The girl is ________ polite ________ she helps the old man. 【答案】 so that 【详解】句意：这个女孩足够有礼貌，去帮助那位老人。分析句子可知，原句使用了“形容词+enough+to do sth.”结构，意为“足够……做某事”。改为同义句时，可转换为“so+形容词+that+从句”结构，意为“如此……以至于……”。故填so； that。 3．The movie Avatar is popular enough to catch many people’s attention. (保持句意基本不变) Avatar is _______ a popular movie _________ it catches many people’s attention. 【答案】 such that 【详解】句意：电影《阿凡达》很受欢迎，吸引了很多人的注意。be enough to do“足够做某事”，分析句子结构可知可以和固定结构“such a/an+形容词+可数名词单数+that”互换，故填such；that。 4．She is not old enough to go to the internet bar. (改为同义句) She is ______ a young girl ______ she can’t go to the internet bar. 【答案】 such that 【详解】句意：她还不够大，不能去网吧。原句还可表达为“她是一个如此年轻的女孩，以至于她不能去网吧”，修饰名词“girl”，应用such...that...“如此……以至于……”，引导结果状语从句。故填such；that。 5．He was too tired to continue running. (改为复合句)   He was ________ tired ________ he couldn’t continue running. 【答案】 so that 【详解】句意：他太累了，无法继续跑步。原句“too...to...”结构表示“太……而不能……”。要改成复合句，需用“so...that...”结构表示“如此……以至于……”，“so”后接形容词或副词，“that”引导结果状语从句。故填so；that。 unless引导条件状语从句 1. unless引导条件状语从句 (1) unless意为“除非”，引导条件状语从句。 You can’t pass the exam unless you work harder than before.除非你比以前更努力，否则你无法通过考试。 (2) unless引导的条件状语从句可以位于主句前，也可以位于主句后。 Unless you tell us the truth, we won’t forgive you. 除非你告诉我们真相，否则我们不会原谅你。 (3) unless本身含有否定含义，其后从句不再用not。 2. 其他条件状语从句 除unless外，if(如果)，as long as(只要)，once(一旦)也常用于引导条件状语从句。 I will give you a gift as long as you pass the exam. 只要你通过考试，我就会给你一个礼物。 If it doesn’t rain tomorrow, we’ll have a picnic. 如果明天不下雨，我们去野餐。 Once you make a decision, stick to it. 一旦你做了决定，就要坚持。 3. 条件状语从句的时态 条件状语从句一般会遵循“主将从现”的时态原则，有以下三种情况： (1) 主句是一般将来时，从句用一般现在时。 (2) 主句的谓语动词含有情态动词，从句用一般现在时。 (3) 主句是祈使句，从句用一般现在时。 从句时态 主句时态 例句 一般现在时 主句(一般将来时) Unless you hurry up, you will miss the bus. 一般现在时 主句(含情态动词) Unless it stops raining, we can’t go out. 一般现在时 主句(祈使句) Don’t enter the room unless Mr. Wang asks you to. 4. unless从句与if...not从句的互换 unless引导的从句与if...not有时可以互换使用，可译为“除了...之外”，表示唯一的条件。 Unless you hurry, you’ll be late.除非你快点，否则你会迟到的 =If you don’t hurry, you’ll be late.如果你不快点，你会迟到的。 [随学随练] 单项填空 1．You will never know what you can achieve ________ you have the courage to face the challenges. A．unless B．because C．if D．though 【答案】A 【详解】句意：除非你有勇气面对挑战，否则你永远不会知道你能取得什么成就。 unless除非；because因为；if如果；though虽然。前半句和后半句为条件逻辑关系，且前半句含never否定词，后半句需要一个表示“除非；如果不”的连词来引导条件状语从句，应填“unless”。 2．You can’t imagine how moving the story is ________ you read it. A．so that B．as soon as C．if D．unless 【答案】D 【详解】句意：除非你读了这个故事，否则你无法想象它有多感人。 so that以便；as soon as一……就……；if如果；unless除非。根据主句“You can’t imagine”可知是否定语境，结合句意可知需要“除非……否则不”的逻辑，unless引导否定条件状语从句符合题意。应填unless。 3．The meat will not go bad ______ you put it in the fridge. A．unless B．though C．until D．if 【答案】D 【详解】句意：如果你把肉放进冰箱里，它就不会变质。A. unless除非；B. though尽管；C. until 直到；D. if如果。句子you put it in the fridge. 是The meat will not go bad的条件，因此用if 引导。故选D。 4．—The students of Grade 9 in Meishan have to take part in the P.E test from 2006. —Yes.________ you want to pass it and be stronger, practice more. A．until B．if C．unless D．or 【答案】B 【详解】句意：-梅山九年级学生必须参加2006年的体育考试。-是的，如果你希望通过并变得更强大，那就多加练习吧！选项A“直到”，选项B“如果”，选项C“除非”，选项D“否则”，这里是在描述一种条件，如果…，就...，故选B。 5．The environment will get worse unless we ______ action immediately. A．take B．will take C．took D．have taken 【答案】A 【详解】句意：除非我们立即采取行动，否则环境会变得更糟。 考查条件状语从句的时态。take采取，一般现在时；will take将要采取，一般将来时；took采取，一般过去时；have taken已经采取，现在完成时。在unless引导的条件状语从句中，遵循“主将从现”原则（主句用一般将来时，从句用一般现在时），本句主句“will get worse”是一般将来时，从句需用一般现在时。故选A。   6．— Jenny, do you think the wild animals will disappear from the Earth one day? — Unless humans ________ the wild animals. A．stop to hunt B．stop hunting C．will stop to hunt D．will stop hunting 【答案】B 【详解】句意：——珍妮，你认为野生动物有一天会从地球上消失吗？——除非人类停止猎杀野生动物。 考查时态及动词短语。stop to hunt停下来去打猎；stop hunting停止打猎；will stop to hunt 将会停下来去打猎；will stop hunting将会停止打猎。根据“…the wild animals will disappear from the Earth one day”可知，此处表达“除非人类停止猎杀野生动物”，用stop hunting，排除选项A和C；句子是unless引导的条件状语从句，遵从“主将从现原则”，从句用一般现在时表将来。故选B。 7．—What’s your plan for the weekend, Mark? —I ________ hiking with my friends in the new park unless it ________. A．go; will rain B．go; won’t rain C．will go; rains D．will go; will rain 【答案】C 【详解】句意：——马克，你周末有什么计划？——除非下雨，否则我会和朋友们去新公园徒步旅行。 考查时态。句子是unless引导的条件状语从句，遵循主将从现，主句用一般将来时will do，从句用一般现在时，主语是it，谓语动词用单三。故选C。 8．He ________ pass the exam ________ he spends more time studying than before. A．will; unless B．won’t; unless C．will; if not D．won’t; if 【答案】B 【详解】句意：除非他花更多的时间学习，否则他不会通过考试。 考查连词辨析。will将会；won’t将不会，will的否定形式；unless除非，如果不，引导条件状语从句；if如果，引导条件状语从句。根据句意可知，“he spends more time studying than before”是“他通过考试”的肯定条件，所以答案是will…if或者won’t…unless。故选B。 按要求完成句子 1．Study hard, or you can’t pass the exam. (改为同义句) _________ you study hard, you _________ pass the exam. 【答案】 If/Unless will/won’t 【详解】句意：努力学习，否则你不会通过考试。改为同义句，可以用“if”引导条件状语从句，遵循“主将从现”原则，主句用一般将来时，表示“如果努力学习，你就会通过考试”，即“If you study hard, you will pass the exam.”；也可以用“unless”引导条件状语从句，表示“除非努力学习，否则你不会通过考试”，即“Unless you study hard, you won’t pass the exam.”。 2．I won’t go to Kitty’s birthday party if she doesn’t invite me.(保持句意基本不变) I won’t go to Kitty’s birthday party ________ she ________ me. 【答案】 unless invites 【详解】句意：如果凯蒂不邀请我，我就不去参加她的生日派对。原句是if引导的条件状语从句的否定形式，保持句意基本不变时，可用unless代替if...not，unless本身表示“除非，如果不”；从句主语she是第三人称单数，句子是一般现在时，谓语动词用invite的第三人称单数形式invites。 3．You will be late for school if you don’t leave at once. (同义句转换) ________ you leave at once, you will be late for school. 【答案】Unless 【详解】原句中“如果你不……”是关键词，对应的同义连词是unless（意为“除非”），可直接替换“if...don’t”引导条件状语从句。故填Unless。 4．Unless you lose weight, you will have health problems. (保持句意不变) ________ you ________ lose weight, you will have health problems. 【答案】 If don’t 【详解】句意：除非你减肥，否则你将会有健康问题。unless“除非”，引导条件状语从句，相当于“if…not”。原句主句为一般将来时，从句时态为一般现在时，改写从句的时态也为一般现在时，if放在句首，首字母需大写；所给句子的主语是“you”，结合原句句意，应借助助动词don’t构成否定句。故填If；don’t。 5．rains, it, we, arrive, on time, unless, tomorrow, will（连词成句） __________________________________________________________________________________________ 【答案】We will arrive on time unless it rains tomorrow 【详解】unless“除非”，引导条件状语从句，遵循“主将从现”，主句we作主语，will arrive作谓语，on time是介词短语，从句it作主语，rains作谓语，tomorrow作时间状语，故填We will arrive on time unless it rains tomorrow“除非明天下雨，否则我们将会按时到达”。 as soon as引导时间状语从句 1. as soon as引导时间状语从句 (1) as soon as 表示“一...就...”，引导时间状语从句，主从句的动作几乎同时发生 As soon as he arrived at the station, he rang up his friend.他一到车站就给朋友打了电话。 (2) as soon as 引导时间状语从句可位于主句前，也可以位于主句后。 She called me as soon as she received the letter. 她一收到信就给我打电话了。 2. 其他时间状语从句 till/until, when, while, as, before, after等也常用于引导时间状语从句。 (3) till表示“直到...时”，常可与until互换。但till一般不位于句首，until可以位于句首。 They slept till the alarm woke them up at four. 他们一直睡到4点钟被闹钟叫醒。 (4) when/while表示“当...时”，通常可以互换使用。when引导的从句的谓语动词可以是延续性动词，也可以是非延续性动词。while引导的从句的谓语动词必须是延续性动词。 When the typhoon came, they stayed safely inside their house.台风来袭时，他们安全地待在屋里。 When/While he was waiting for the doctors, he shouted to neighbors aloud for help. 在他等待医生的时候，他大声向邻居呼救。  (5) as也可以表示“当...时”,可与when/while互换使用。当表示“随着...”时，只用as引导从句。 As/When she stood on the stage with flowers in hands, her eyes were filled with tears.当她手捧鲜花站在舞台上时，眼中充满了泪水。 As time goes on, we’re sure to find more ways to make our homes smarter!随着时间的推移，我们一定会找到更多让我们的家变得更智能的方法！ (6) before表示“在...之前”；after表示“在...之后”。 After the storm passed, some people started to clear the streets.暴风雨过后，一些人开始清理街道。  Look both ways before you cross the street to avoid accidents.过马路前要左右看，以免发生事故。 3. 时间状语从句的时态 (1) 时间状语从句一般遵循“主将从现”原则。若表示总是或经常性发生的动作，主从句均用一般现在时。 We will leave for the airport as soon as the taxi arrives here tomorrow morning.明天早上出租车一到，我们就出发去机场。 In Japan, students bow as soon as they meet a teacher.在日本，学生一见到老师就会鞠躬。 (2) 主句是过去的时态，从句使用相应的过去的时态。 He left as soon as the meeting ended.会议一结束他就走了。 4. 其他“一...就...”的表达 除了as soon as外，还有如下方式表达“一...就...” (1) the moment; the minute; immediately 以上表达，充当连词，连接从句，可与as soon as互换使用 Tony turned on TV the moment/the minute/ immediately he sat on the sofa.托尼一坐到沙发上就打开了电视。 (2) on/upon+名词/doing... on/upon介词，后接名词或动词-ing形式等。 On/Upon our arrival, the host welcomed us warmly.我们一到达，主人就热情地迎接了我们。 [随学随练] 单项填空 1．________ the mother heard her daughter shouting for help, she ran out of the room quickly. A．Unless B．Although C．As soon as D．Before 【答案】C 【详解】句意：母亲一听到女儿喊救命，就迅速跑出了房间。 Unless除非；Although尽管；As soon as一……就……；Before在……之前。根据“the mother heard her daughter shouting for help, she ran out of the room quickly”可知，听到呼救声后立即跑出房间，表示动作紧接着发生，应用as soon as引导时间状语从句。 2．The boy was so tired that he fell asleep ________ he lay down on the bed. A．as soon as B．as long as C．as far as D．as well as 【答案】A 【详解】句意：这个男孩太累了，以至于他一躺到床上就睡着了。 考查连词短语辨析。as soon as一……就……，表示时间；as long as只要，表示条件；as far as就……而言，表示程度或范围；as well as和……一样好，也，表示并列或比较。根据主句“fell asleep”和从句“he lay down on the bed”的逻辑关系可知，躺下和入睡两个动作紧接着发生，强调时间上的迅速。as soon as“一……就……”，符合此语境。故选A。 3．---Can’t I go outside to play with my friends? ---No, you can’t leave_________you finish all the food in your bowl. A．if B．when C．as soon as D．until 【答案】D 【详解】句意：——我不能和朋友一起出去玩吗？——不，直到你把碗里的食物吃完，你才能离开。考查连词辨析题。if如果，表条件；when当时候，表时间可兼指＂时间点＂与＂时间段＂，所引导的从句的动词既可以是终止性动词，也可是持续性动词；as soon as一…就，引导时间状语从句，如果主句用将来时或情态动词或祈使句，从句必须用一般现在时代替将来时；until（与否定词连用）直到…之前/到…为止，表时间。本句是“not…until”结构，根据句意语境，可知选D。 4．I ________ Jenny about the good news as soon as she ________ back. A．will tell; will come B．will tell; comes C．tell; comes D．tell; will come 【答案】B 【详解】句意：她一回来，我就会告诉她这个好消息。 考查时态。第一空表示“告诉”这个动作将在将来发生，用一般将来时will tell；第二空是as soon as引导的时间状语从句，遵循主将从现原则，即主句用将来时，从句用一般现在时表示将来，因此用comes。故选B。 5．—Did you remember ________ Tom the money you had borrowed? —Yes, I gave it to him ________ I saw him. A．returning; the moment B．to return; the moment C．returning; the moment when D．to return; as soon as 【答案】A 【详解】句意：——你记得把你借的钱还给汤姆了吗？——是的，我一见到他就给了他。 考查非谓语动词和状语从句。returning归还，现在分词或动名词形式；to return归还，动词不定式；the moment一……就……；as soon as一……就……。结合语境和“Did you remember”以及“Yes”可知，此处表示你是否记得做过某事，其英文表达为remember doing sth.，故第一空应用returning，排除选项B和D。根据“I gave it to him”和“I saw him”可知，我一见到他就给了他，结合选项可知，the moment表示“一……就……”，此时在这里引导时间状语从句。故选A。 按要求完成句子 1．The boy throws his schoolbag on the sofa the moment he gets home. The boy throws his schoolbag on the sofa ________ ________ ________ he gets home. 【答案】 as soon as 【详解】句意：这个男孩一到家就把书包扔到了沙发上。此处需要同义替换the moment“一……就……”，as soon as为连词短语“一……就……”，符合题意。故填as；soon；as。 2．She finished her homework. Then she went out to play. (用as soon as合并)   She went out to play ________ ________ ________ she finished her homework. 【答案】 as soon as 【详解】句意：她完成了作业，然后出去玩了。as soon as是连词，用来引导时间状语从句，结构为“主句+as soon as+从句”，符合原句的动作先后逻辑。 3．He received the e-mail and immediately replied to it. (保持句意基本不变) __________________________________________________________________________________________ 【答案】As soon as he received the e-mail, he replied to it. 【详解】句意：他收到了电子邮件，并立即回复了它。分析句子可知，此处可以表达为“他一收到电子邮件，就回复了”，用as soon as引导时间状语从句，首字母大写；he作主语；received作谓语动词；the e-mail作宾语；主句中he作主语；replied to作谓语动词；it作宾语。故填As soon as he received the e-mail, he replied to it. 4．will reach for, he, the new message, receives it, as soon as, his phone, Jason, to check. (连词成句) __________________________________________________________________________________________ 【答案】Jason will reach for his phone to check the new message as soon as he receives it 【详解】根据所给标点可知应用陈述句的形式，句子为含有时间状语从句的复合句。分析所给单词，Jason作主句主语；will后接动词原形，reach for是动词短语，意为“伸手去拿”，作主句谓语；his phone作reach for的宾语；to check the new message是动词不定式短语作目的状语，表示“去查看新消息”；as soon as引导时间状语从句，表示“一……就……”，he作从句主语，receives是动词第三人称单数形式，作从句谓语，it作receives的宾语。故填Jason will reach for his phone to check the new message as soon as he receives it“杰森一收到新消息就会伸手去拿手机查看”。 2、 单元语法基础练习 1. 单项填空 (1) He _________ me a card as soon as he _________ to Japan. A．will send, will get B．will send, get C．sends, gets D．will send, gets 【答案】D 【详解】句意：他一到日本就会寄给我一张卡片。 考查主将从现。根据“He ... me a card as soon as he ... to Japan.”可知，该句是as soon as引导的时间状语从句，遵循“主将从现”，即主句用一般将来时，从句用一般现在时；从句主语为“he”，谓语动词要用第三人称单数。故选D。 (2) ________ he heard the little girl crying for help outside, he rushed out of the room immediately. A．Before B．Unless C．As soon as D．Although 【答案】C 【详解】句意：他一听到小女孩在外面喊救命，就立刻冲出了房间。 考查连词辨析。before在……之前；unless除非；as soon as一……就……；although尽管。根据“he heard the little girl crying for help outside, he rushed out of the room immediately”可知，是一听到小女孩在外面喊救命，就立刻冲出了房间，用as soon as引导时间状语从句，故选C。 (3) —Jim has made _______ great progress in the Physics exam that his teacher feels surprised. —It’s hard for him to get high marks _______ he works hard enough. A．so a; until B．such a; before C．so; while D．such; unless 【答案】D 【详解】句意：——Jim在物理考试中取得很大进步，这让老师感觉很惊讶。——除非他足够努力，否则他很难得高分。 考查状语从句。so如此，修饰形容词或副词；such如此，修饰名词；until直到；before在……之前；while当……时；unless除非。make progress表示“取得进步”，progress不可数名词，用such修饰；“he works hard enough.”是条件，用unless引导条件状语从句。故选D。 (4) Your dream will come true _________ you give it up half way. Hang in there! A．if B．until C．unless D．because 【答案】C 【详解】句意：如果你中途不放弃，你的梦想就会实现。坚持住！ 考查连词辨析。if如果，引导条件状语从句；until直到，引导时间状语从句；unless除非，引导条件状语从句；because因为，引导原因状语从句。结合语境分析，后半句是一个条件状语从句，空处表示“除非”。故选C。 (5) _______ bad weather _______ me, I will go for a walk every day. I think health is the most important. A．If; stops B．Because; will stop C．Unless; stops D．As; will stop 【答案】C 【详解】C 根据句意可知，“除非天气不好，......”，故选C。 (6) The scientist made ________ discovery that it completely changed our understanding of the universe. A．such surprising a B．so surprising a C．such surprising D．so a surprising 【答案】B 【详解】句意：这位科学家做出了如此惊人的发现，以至于它彻底改变了我们对宇宙的理解。 考查“so/such...that”结构辨析。 such surprising a（错误语序）；so surprising a（正确的“so+形容词+a/an+单数可数名词”结构）；such surprising（缺少冠词，不完整）； so a surprising（冠词位置错误）。根据题干中“discovery”为单数可数名词，且空格后为“that”引导的结果状语从句，应使用“so+形容词+a/an+单数可数名词”或“such+a/an+形容词+单数可数名词”结构。选项B符合要求。故选B。 (7) The movie Kung Fu Panda 4 is ________ exciting ________ all my classmates went to see it. A．not; until B．such; that C．so; that D．not; unless 【答案】C 【详解】句意：电影《功夫熊猫4》是如此令人兴奋，以至于我所有的同学都去看了它。 考查连词短语辨析。not... until...“直到……才”，表示直到某个时间点或事件发生，另一个动作才会发生；such... that...“如此……以至于”，“such”后接名词短语；so... that...“如此……以至于”，“so”后接形容词或副词；not... unless“除非……否则不”，表示条件关系。由exciting“令人激动的”是形容词，“all my classmates went to see it”可知，此处表示电影令人兴奋的程度导致同学们都去看了，应用“so... that”引导结果状语从句。 故选C。 (8) The coach gave Lily ________ useful advice that she ________ to improve herself in a short time. A．such a; tried B．so; tried C．so; managed D．such; managed 【答案】D 【详解】句意：教练给了莉莉如此有用的建议，以至于她在短时间内成功提升了自己。 考查结果状语从句以及动词辨析。tried尝试，不强调结果；managed设法做到，强调 “成功完成” 的结果。“such” 修饰名词（短语），“so” 修饰形容词或副词，题干中“useful advice”是“形容词 + 不可数名词”结构，中心词是名词“advice”，需用“such”修饰； “to improve herself in a short time”（在短时间内提升自己）隐含“成功达成”的语义，结合语境，教练的有用建议应帮助莉莉“成功”提升，而非仅“努力”未提结果，managed符合。故选D。 (9) The students asked ________ many questions that the new teacher felt ________ confused. A．such; such B．such; so C．so; such D．so; so 【答案】D 【详解】句意：学生们问了很多问题，新老师感到很困惑。 考查副词用法。such“如此，这样”，修饰名词；so“很……”，修饰形容词或副词。第一空，空后有“many”，应用so，此处是so...that引导结果状语从句，排除A和B；第二空，空后confused“困惑的”，形容词，应用副词so修饰confused，在句中作状语，排除C。故选D。 (10) —What a heavy haze(雾霾)! The air pollution is terrible now. —It ________ worse unless we ________ action to protect the environment. A．is; will take B．will be; take C．will be; will take D．won’t be; take 【答案】B 【详解】句意：——多么严重的阴霾！现在空气污染很严重。——除非我们采取行动保护环境，否则情况会更糟。 考查时态。分析句子可知，句子是unless引导的条件状语从句，遵循“主将从现”，主句用一般将来时will do，从句用一般现在时，排除AC；根据“It...worse unless we...action... ”可知如果不采取行动，情况会更糟，主句是肯定句，排除D。故选B。 2. 用so/such...that...、unless 和as soon as填空 (1) It was a sudden storm we had to stay at home. (2) The alarm was loud everyone woke up at once. (3) I will tell you the result I receive it. (4) You can’t get good grades you review your lessons often. (5) It is an interesting novel I can’t put it down. (6) The story was moving many readers felt touched. (7) the bell rang, the students stopped talking. (8) He won’t go to the party he is properly invited. (9) It was a funny joke we all laughed loudly. (10) You won’t understand the culture you learn about its customs. 【答案】 (1) such that (2) so that (3) as soon as (4) unless (5) such that (6) so that (7) As soon as (8) unless (9) such that (10) unless 【解析】 (1)句意：突然下起了暴雨，我们不得不待在家里。句中 “a sudden storm” 为名词短语，应用 such…that… 结构，表示 “如此…… 以至于……”。故填 such; that。 (2)句意：警报声如此大，以至于所有人立刻醒了。句中 “loud” 为形容词，应用 so…that… 结构，表示 “如此…… 以至于……”。故填 so; that。 (3)句意：我一收到结果就告诉你。根据句意，表示 “一…… 就……”，应用 as soon as。故填 as soon as。 (4)句意：除非你经常复习功课，否则你不能取得好成绩。根据句意，表示 “除非”，应用unless。故填 unless。 (5)句意：这本小说如此有趣，以至于我爱不释手。句中 “an interesting novel” 为名词短语，应用such…that… 结构。故填 such; that。 (6)句意：这个故事如此感人，以至于许多读者都被触动了。句中 “moving” 为形容词，应用so…that… 结构。故填 so; that。 (7)句意：铃声一响，学生们就停止了讲话。根据句意，表示 “一…… 就……”，且位于句首，应用As soon as。故填 As soon as。 (8)句意：除非他被正式邀请，否则他不会去参加派对。根据句意，表示 “除非”，应用unless。故填 unless。 (9)句意：这个笑话如此好笑，以至于我们都大声笑了。句中 “a funny joke” 为名词短语，应用such…that… 结构。故填 such; that。 (10)句意：除非你了解它的习俗，否则你不会理解这种文化。根据句意，表示 “除非”，应用unless。故填unless。 3. 按要求完成句子 (1) The question is very difficult. No one can answer it.  (用so… that 合并为一句话) 【答案】The question is so difficult that no one can answer it. 【详解】句意：这个问题很难。没人能回答。“so…that…”用于引导结果状语从句，表示“如此……以至于……”，其中“so”后接形容词或副词，“that”后面接表示结果的从句。原句中“The question is very difficult.”是“这个问题很难”之意，导致的结果是“No one can answer it”，表示“没人能回答”之意，符合“so…that…”的结构要求。因此，将“very”替换为“so”，并在“difficult”后加“that”，故答案为“The question is so difficult that no one can answer it.”。 (2) Don’t make a promise. You can’t keep it.  (用unless 合并为一句话) 【答案】Don’t make a promise unless you can keep it. 【详解】根据中英文对照，原句由两个分句构成：“Don’t make a promise”和“You can’t keep it”。使用“unless”合并时，“unless”意为“除非”，相当于“如果不”。将第二个分句改为肯定形式“you can keep it”置于“unless”之后，构成条件状语从句，主句为祈使句“Don’t make a promise”。合并后的句子含义为：除非你能信守承诺，否则不要许下承诺。 (3) He started to learn Chinese paper‑cutting. He fell in love with it. (用as soon as改写) ________ ________ he started to learn Chinese paper‑cutting, he fell in love with it. 【答案】 As soon as 【详解】句意：他开始学习中国剪纸。他爱上了它。用“as soon as”连接两个句子，意为“一……就……”，放在句首时首字母大写。 (4) We will go hiking if it is sunny tomorrow. (同义句转换) We won’t go hiking ________ it ________ sunny tomorrow. 【答案】 unless is 【详解】句意：如果明天天气晴朗，我们就去远足。原句中if引导条件状语从句，表示“如果……就……”。同义句可用unless转换，意为“除非……否则不……”，即“除非明天天气晴朗，否则我们不去远足”。unless引导的从句用一般现在时，主语it是第三人称单数，be动词用is。 (5) He is too young to manage his own money. (改为同义句) He is ________ young ________ he can’t manage his own money. 【答案】 so that 【详解】句意：他太年轻了，还不能管理自己的钱。原句中too…to… (太……而不能……) 可以转换为so…that… (如此…… 以至于……)结构，表达相同含义。 (6) The old man’s voice was so low that we could hardly hear his story.（保持句意基本相同） The old man’s voice was ________ low for us ________ hear his story. 【答案】 too to 【详解】句意：老人的声音太低，以至于我们几乎听不到他的故事。“so+adj.+that...”表示“如此……以至于……”，可转换为“too+ adj.+to do sth.”结构，意为“太……而不能……”。原句意为“声音太低，我们几乎听不见”，故改为“声音太低以至于我们听不见”，用too low for us to hear。故填too；to。 (7) The movie was so touching that I cried several times. (改为同义句)   It was ________ a touching movie ________ I cried several times. 【答案】 such that 【详解】句意：这部电影如此感人，以至于我哭了好几次。原句是so+形容词+that引导的结果状语从句，改为同义句需用such+a/an+形容词+可数名词单数+that结构，二者均可表示“如此……以至于……”，故填such；that。 (8) The box is so heavy that I can’t carry it. (改为简单句) The box is ________ heavy ________ me to carry. 【答案】 too for 【详解】句意：这个箱子太重了，我搬不动它。so...that可转换为too...for sb to do，表示“对某人来说太……而不能……”。 (9) Monkey King cannot turn himself into a man unless he can hide his tail. (改为同义句) Monkey King cannot turn himself into a man ________ he ________ hide his tail. 【答案】 if cannot/can’t 【详解】句意：孙悟空不能变成人除非他能把他的尾巴藏起来。此处为unless引导的条件状语从句，改为同义句，应用短语if…not“如果不……”，前文用cannot进行否定，应填if；cannot/can’t。 (10) If we don’t take action to protect the wetlands, the wild birds will lose their living homes. （改为同义句） The wild birds will lose their living homes ________ we ________ to protect the wetlands. 【答案】 unless take action 【详解】句意：如果我们不采取行动保护湿地，野生鸟类将失去它们的家园。改为同义句时，需将“If we don’t...”这一否定条件状语从句转换为“...unless we...”结构，表示“除非我们……，否则……”。“take action”（采取行动）为固定短语。故①填unless，②填take action。 3、 单元语法提升练习 1. 语法选择 Last week, I had dinner at my British friend Tom’s house. I was a little nervous because I didn’t know much about English table manners. Tom told me, “Don’t bring food 1 the host asks you to.” So I only brought a small gift. When I arrived, Tom’s mother was still cooking. I offered to help, but she said, “Just sit down and relax.” I waited for everyone to sit 2 I sat down. Tom told me, “You should wait for the host 3 start eating.” So I didn’t touch my fork until Tom’s father picked up his knife and fork. At first, I was confused about how to use the knife and fork 4 . Tom said, “Hold the knife in your right hand 5 the fork in your left.” I tried my best, but it was 6 difficult 7 I almost dropped my fork. Tom smiled and said, “Don’t worry. If you get confused, just watch what 8 else does.” After the meal, I thanked the host and said that everything 9 delicious. Tom’s mother was very happy. I learned that good table manners can help us 10 a good impression on others. 1．A．if B．unless C．when D．because 2．A．before B．after C．as soon as D．until 3．A．for B．to C．of D．with 4．A．proper B．properly C．more proper D．most proper 5．A．but B．or C．and D．so 6．A．so B．such C．too D．very 7．A．that B．as C．like D．to 8．A．nobody B．anybody C．everybody D．somebody 9．A．is B．are C．was D．were 10．A．make B．making C．makes D．made 【答案】 1．B 2．A 3．B 4．B 5．C 6．A 7．A 8．C 9．C 10．A 【导语】本文是一篇记叙文，讲述了作者上周在英国朋友汤姆家吃晚餐时，学习英国餐桌礼仪的经历，介绍了餐前、餐中、餐后的礼仪细节，说明了良好的餐桌礼仪有助于给他人留下好印象。 1．句意：除非主人让你带食物，否则不要带食物来。 根据上下文语境，此处表达“除非……否则不”的条件逻辑，应用连词unless“除非”；if“如果”、when“当……时候”、because“因为”均不符合此处否定条件的语境。 2．句意：我等所有人都坐下后才坐下。 根据英国餐桌礼仪的先后顺序，此处表示“在我坐下之前，先等其他人落座”，应用连词 before“在……之前”；after“在……之后”、as soon as“一……就”、until“直到……才”均不符合此处的先后逻辑。 3．句意：你应该等主人开始吃了再吃。 wait for sb. to do sth.“等待某人做某事”，固定搭配，此处需用动词不定式符号to；for、of、with均不构成该固定搭配。 4．句意：起初，我对如何正确使用刀叉感到困惑。 根据语法规则，修饰动词“use”需用副词，应用proper的副词形式properly“正确地”；proper是形容词，more proper和most proper是形容词的比较级和最高级，均不能修饰动词。 5．句意：右手拿刀，左手拿叉。 根据语境，此处连接两个并列的动作，表示并列关系，应用连词and“和”；but“但是”表转折、or“或者”表选择、so“所以”表因果，均不符合并列逻辑。 6．句意：我尽了最大努力，但太难了，我差点把叉子掉了。 so...that...“如此……以至于……”，固定搭配，so后接形容词“difficult”；such后需接名词短语，too和very不能与that构成结果状语从句，均不符合结构要求。 7．句意：我尽了最大努力，但太难了，我差点把叉子掉了。 so...that...“如此……以至于……”，固定搭配，此处需用that引导结果状语从句；as、like、to均不构成该固定搭配。 8．句意：如果你感到困惑，就看看其他人怎么做。 根据语境，此处表示“其他所有人”，应用everybody else；nobody“没有人”、anybody“任何人 (多用于否定/疑问句)”、somebody“某人”均不符合语境。 9．句意：饭后，我向主人道谢，并说所有东西都很美味。 根据时态一致原则，主句动词“thanked”为一般过去时，宾语从句需用一般过去时；主语“everything”为单数，be动词用was；is、are是一般现在时，were是复数形式，均不符合时态和主谓一致要求。 10．句意：我了解到良好的餐桌礼仪能帮助我们给别人留下好印象。 help sb. (to) do sth.“帮助某人做某事”，固定搭配，其中to可省略，应用动词原形make；making是现在分词/动名词，makes是动词三单形式，made是过去式，均不符合此处用法。 2. 翻译句子 (1) 我一坐在电视机前我妈就过来了。 【答案】As soon as I sat down in front of the TV, my mother came over. (2) 除非公交车很拥挤，否则乘客们迫不及待地上车。 【答案】Unless the bus is crowded, passengers can’t wait to get on the bus. (3) 除非你每天复习，否则你会忘记这些新单词。 【答案】You will forget these new words unless you review them every day. (4) 印象如此重要，以至于我不想说错或做错任何事情。 【答案】Impressions are so important that I don’t want to say or do anything wrong! (5) 但是英式餐桌礼仪如此复杂，以至于我有点担心。 【答案】But English table manners are so confusing that I’m a little worried. (6) David如此爱好阅读以至于他每天在这一方面花一小时。 【答案】David is so crazy about reading that he spends an hour on it every day. (7) Amy一收到礼物就打开了。 【答案】Amy opened the gift as soon as she received it. (8) 不要轻易相信别人除非你很了解他。 【答案】Don't easily trust others unless you know them well. 学科网（北京）股份有限公司 $ Unit 6 Crossing Cultures核心知识点精讲精练 2 (Grammar)（so...that...,unless,as soon as引导状语从句） 【主要内容】 · 【单元核心知识点精讲精练】每个单元按照教材安排分为Section A；Grammar和Section B三个部分。 · Grammar 部分精讲本单元的重点语法，讲解部分配有随学随练。 · Grammar 部分还设置了单元语法基础练习和单元语法提升练习，丰富多样的习题帮助学生更好地学习并掌握单元语法知识。 1、 单元语法解析 so...that...引导结果状语从句 1. so...that...引导让步状语从句 (1) so...that...表示“如此...以至于...”，引导结果状语从句。 (2) so是副词，修饰形容词、副词等，强调程度。that后引导的从句表示前面句子产生的结果。 He is so smart that he has solved all the problems. 他如此聪明，已经解决了所有的问题。 2. 其他结果状语从句 除so...that...外，so that；such...that...等也可以引导结果状语从句 (1) so that表示“因此；所以”，可以引导结果状语从句，位于主句后，可以用逗号隔开。that可以省略，此时变成了so引导的并列句。 so that也可以表示“以便，为了”，引导目的状语从句时，从句中常有can,could,may,might,will,等情态动词，从句位于主句后，且不用加逗号。 He explained it clearly, so that everyone was satisfied.他解释得很清楚因此大家都很满意。(结果状语从句) He must get up early that he can go to work on time.他必须早点起床,以便能按时上班。(目的状语从句) (2) such...that...表示“如此...以至于...”，such是形容词，其后跟名词或名词为中心词的短语。 He is such a lovely boy that everyone likes him. 他是如此可爱的男孩，每个人都喜欢他。 3. so...that...与such...that...用法区别 (1) so是副词，修饰形容词和副词等，引导结果状语从句时，其后接形容词或副词。 such是形容词，修饰名词等，引导结果状语从句时，其后接名词或名词为中心词的短语。 可参照以下结构： · so+adj./adv.+that... She runs so quickly that no one can catch up with her.她跑得如此快，以至于没人能追上上。 · such+(a/an)+adj.+n.+that It was such a hot day that we stayed at home.这是如此热的一天，以至于我们待在家里。 · so+形容词+a/an+单数名词+that从句 Lucy is so kind a girl that she is popular among the neighbours.露西是个如此善良的女孩，深受邻居们的喜爱。 (2) 名词前有many/much/few/little，表示“多；少”含义时，前面只用so，不用such。 There are so many people in the room that it's crowded. 房间里有如此多的人，以至于很拥挤。 4. so...that...与too...to.../enough to的互换 so...that...表示“如此…以至于…”，有时可以与 too...to...（太…而不能…）或 enough to（足够…以至于…）互换使用，但要注意含义的变化。 He is so short that he can't reach the shelf. = He is too short to reach the shelf.他太矮了，够不到架子。 is so strong that he can move the stone.= He is strong enough to move the stone.他足够强壮，能搬动这块石头。 [随学随练] 单项填空 1．The movie is ________ exciting ________ I want to watch it again. A．too; to B．enough; to C．such; that D．so; that 2．He reads ______ few books that he can’t tell stories to ______ little children. A．so; such B．such; such C．so; so D．such; so 3．It was ________ difficult a question that ________ people could answer it. A．so; few B．so; a few C．such; few D．such; a few 4．There is ________ much information online ________ we must be careful to identify the truth. A．so; that B．such; that C．too; to D．very; that 5．The box is ________ heavy for the little girl ________ carry. A．too; to B．so; that C．very; to D．enough; to 6．The little girl was _________ understand why we shouldn’t talk with food in our mouths until her mom explained it patiently again and again. A．so young that B．too young to C．young enough to D．young enough that 7．In many countries, people are _________ follow others instead of pushing past them when walking on crowded streets. A．too polite to B．so polite that C．polite enough to D．polite enough that 8．This is ________ an improper question ________ you shouldn’t ask it in public. A．so; that B．such; that C．too; to D．enough; to 按要求完成句子 1．The cake is delicious enough to eat. (改为 so…that…) The cake is ________ ________ ________ I want to eat it. 2．The girl is polite enough to help the old man.（改为同义句） The girl is ________ polite ________ she helps the old man. 3．The movie Avatar is popular enough to catch many people’s attention. (保持句意基本不变) Avatar is _______ a popular movie _________ it catches many people’s attention. 4．She is not old enough to go to the internet bar. (改为同义句) She is ______ a young girl ______ she can’t go to the internet bar. 5．He was too tired to continue running. (改为复合句)   He was ________ tired ________ he couldn’t continue running. unless引导条件状语从句 1. unless引导条件状语从句 (1) unless意为“除非”，引导条件状语从句。 You can’t pass the exam unless you work harder than before.除非你比以前更努力，否则你无法通过考试。 (2) unless引导的条件状语从句可以位于主句前，也可以位于主句后。 Unless you tell us the truth, we won’t forgive you. 除非你告诉我们真相，否则我们不会原谅你。 (3) unless本身含有否定含义，其后从句不再用not。 2. 其他条件状语从句 除unless外，if(如果)，as long as(只要)，once(一旦)也常用于引导条件状语从句。 I will give you a gift as long as you pass the exam. 只要你通过考试，我就会给你一个礼物。 If it doesn’t rain tomorrow, we’ll have a picnic. 如果明天不下雨，我们去野餐。 Once you make a decision, stick to it. 一旦你做了决定，就要坚持。 3. 条件状语从句的时态 条件状语从句一般会遵循“主将从现”的时态原则，有以下三种情况： (1) 主句是一般将来时，从句用一般现在时。 (2) 主句的谓语动词含有情态动词，从句用一般现在时。 (3) 主句是祈使句，从句用一般现在时。 从句时态 主句时态 例句 一般现在时 主句(一般将来时) Unless you hurry up, you will miss the bus. 一般现在时 主句(含情态动词) Unless it stops raining, we can’t go out. 一般现在时 主句(祈使句) Don’t enter the room unless Mr. Wang asks you to. 4. unless从句与if...not从句的互换 unless引导的从句与if...not有时可以互换使用，可译为“除了...之外”，表示唯一的条件。 Unless you hurry, you’ll be late.除非你快点，否则你会迟到的 =If you don’t hurry, you’ll be late.如果你不快点，你会迟到的。 [随学随练] 单项填空 1．You will never know what you can achieve ________ you have the courage to face the challenges. A．unless B．because C．if D．though 2．You can’t imagine how moving the story is ________ you read it. A．so that B．as soon as C．if D．unless 3．The meat will not go bad ______ you put it in the fridge. A．unless B．though C．until D．if 4．—The students of Grade 9 in Meishan have to take part in the P.E test from 2006. —Yes.________ you want to pass it and be stronger, practice more. A．until B．if C．unless D．or 5．The environment will get worse unless we ______ action immediately. A．take B．will take C．took D．have taken 6．— Jenny, do you think the wild animals will disappear from the Earth one day? — Unless humans ________ the wild animals. A．stop to hunt B．stop hunting C．will stop to hunt D．will stop hunting 7．—What’s your plan for the weekend, Mark? —I ________ hiking with my friends in the new park unless it ________. A．go; will rain B．go; won’t rain C．will go; rains D．will go; will rain 8．He ________ pass the exam ________ he spends more time studying than before. A．will; unless B．won’t; unless C．will; if not D．won’t; if 按要求完成句子 1．Study hard, or you can’t pass the exam. (改为同义句) _________ you study hard, you _________ pass the exam. 2．I won’t go to Kitty’s birthday party if she doesn’t invite me.(保持句意基本不变) I won’t go to Kitty’s birthday party ________ she ________ me. 3．You will be late for school if you don’t leave at once. (同义句转换) ________ you leave at once, you will be late for school. 4．Unless you lose weight, you will have health problems. (保持句意不变) ________ you ________ lose weight, you will have health problems. 5．rains, it, we, arrive, on time, unless, tomorrow, will（连词成句） __________________________________________________________________________________________ as soon as引导时间状语从句 1. as soon as引导时间状语从句 (1) as soon as 表示“一...就...”，引导时间状语从句，主从句的动作几乎同时发生 As soon as he arrived at the station, he rang up his friend.他一到车站就给朋友打了电话。 (2) as soon as 引导时间状语从句可位于主句前，也可以位于主句后。 She called me as soon as she received the letter. 她一收到信就给我打电话了。 2. 其他时间状语从句 till/until, when, while, as, before, after等也常用于引导时间状语从句。 (3) till表示“直到...时”，常可与until互换。但till一般不位于句首，until可以位于句首。 They slept till the alarm woke them up at four. 他们一直睡到4点钟被闹钟叫醒。 (4) when/while表示“当...时”，通常可以互换使用。when引导的从句的谓语动词可以是延续性动词，也可以是非延续性动词。while引导的从句的谓语动词必须是延续性动词。 When the typhoon came, they stayed safely inside their house.台风来袭时，他们安全地待在屋里。 When/While he was waiting for the doctors, he shouted to neighbors aloud for help. 在他等待医生的时候，他大声向邻居呼救。  (5) as也可以表示“当...时”,可与when/while互换使用。当表示“随着...”时，只用as引导从句。 As/When she stood on the stage with flowers in hands, her eyes were filled with tears.当她手捧鲜花站在舞台上时，眼中充满了泪水。 As time goes on, we’re sure to find more ways to make our homes smarter!随着时间的推移，我们一定会找到更多让我们的家变得更智能的方法！ (6) before表示“在...之前”；after表示“在...之后”。 After the storm passed, some people started to clear the streets.暴风雨过后，一些人开始清理街道。  Look both ways before you cross the street to avoid accidents.过马路前要左右看，以免发生事故。 3. 时间状语从句的时态 (1) 时间状语从句一般遵循“主将从现”原则。若表示总是或经常性发生的动作，主从句均用一般现在时。 We will leave for the airport as soon as the taxi arrives here tomorrow morning.明天早上出租车一到，我们就出发去机场。 In Japan, students bow as soon as they meet a teacher.在日本，学生一见到老师就会鞠躬。 (2) 主句是过去的时态，从句使用相应的过去的时态。 He left as soon as the meeting ended.会议一结束他就走了。 4. 其他“一...就...”的表达 除了as soon as外，还有如下方式表达“一...就...” (1) the moment; the minute; immediately 以上表达，充当连词，连接从句，可与as soon as互换使用 Tony turned on TV the moment/the minute/ immediately he sat on the sofa.托尼一坐到沙发上就打开了电视。 (2) on/upon+名词/doing... on/upon介词，后接名词或动词-ing形式等。 On/Upon our arrival, the host welcomed us warmly.我们一到达，主人就热情地迎接了我们。 [随学随练] 单项填空 1．________ the mother heard her daughter shouting for help, she ran out of the room quickly. A．Unless B．Although C．As soon as D．Before 2．The boy was so tired that he fell asleep ________ he lay down on the bed. A．as soon as B．as long as C．as far as D．as well as 3．---Can’t I go outside to play with my friends? ---No, you can’t leave_________you finish all the food in your bowl. A．if B．when C．as soon as D．until 4．I ________ Jenny about the good news as soon as she ________ back. A．will tell; will come B．will tell; comes C．tell; comes D．tell; will come 5．—Did you remember ________ Tom the money you had borrowed? —Yes, I gave it to him ________ I saw him. A．returning; the moment B．to return; the moment C．returning; the moment when D．to return; as soon as 按要求完成句子 1．The boy throws his schoolbag on the sofa the moment he gets home. The boy throws his schoolbag on the sofa ________ ________ ________ he gets home. 2．She finished her homework. Then she went out to play. (用as soon as合并)   She went out to play ________ ________ ________ she finished her homework. 3．He received the e-mail and immediately replied to it. (保持句意基本不变) __________________________________________________________________________________________ 4．will reach for, he, the new message, receives it, as soon as, his phone, Jason, to check. (连词成句) __________________________________________________________________________________________ 2、 单元语法基础练习 1. 单项填空 (1) He _________ me a card as soon as he _________ to Japan. A．will send, will get B．will send, get C．sends, gets D．will send, gets (2) ________ he heard the little girl crying for help outside, he rushed out of the room immediately. A．Before B．Unless C．As soon as D．Although (3) —Jim has made _______ great progress in the Physics exam that his teacher feels surprised. —It’s hard for him to get high marks _______ he works hard enough. A．so a; until B．such a; before C．so; while D．such; unless (4) Your dream will come true _________ you give it up half way. Hang in there! A．if B．until C．unless D．because (5) _______ bad weather _______ me, I will go for a walk every day. I think health is the most important. A．If; stops B．Because; will stop C．Unless; stops D．As; will stop (6) The scientist made ________ discovery that it completely changed our understanding of the universe. A．such surprising a B．so surprising a C．such surprising D．so a surprising (7) The movie Kung Fu Panda 4 is ________ exciting ________ all my classmates went to see it. A．not; until B．such; that C．so; that D．not; unless (8) The coach gave Lily ________ useful advice that she ________ to improve herself in a short time. A．such a; tried B．so; tried C．so; managed D．such; managed (9) The students asked ________ many questions that the new teacher felt ________ confused. A．such; such B．such; so C．so; such D．so; so (10) —What a heavy haze(雾霾)! The air pollution is terrible now. —It ________ worse unless we ________ action to protect the environment. A．is; will take B．will be; take C．will be; will take D．won’t be; take 2. 用so/such...that...、unless 和as soon as填空 (1) It was a sudden storm we had to stay at home. (2) The alarm was loud everyone woke up at once. (3) I will tell you the result I receive it. (4) You can’t get good grades you review your lessons often. (5) It is an interesting novel I can’t put it down. (6) The story was moving many readers felt touched. (7) the bell rang, the students stopped talking. (8) He won’t go to the party he is properly invited. (9) It was a funny joke we all laughed loudly. (10) You won’t understand the culture you learn about its customs. 3. 按要求完成句子 (1) The question is very difficult. No one can answer it.  (用so… that 合并为一句话) (2) Don’t make a promise. You can’t keep it.  (用unless 合并为一句话) (3) He started to learn Chinese paper‑cutting. He fell in love with it. (用as soon as改写) ________ ________ he started to learn Chinese paper‑cutting, he fell in love with it. (4) We will go hiking if it is sunny tomorrow. (同义句转换) We won’t go hiking ________ it ________ sunny tomorrow. (5) He is too young to manage his own money. (改为同义句) He is ________ young ________ he can’t manage his own money. (6) The old man’s voice was so low that we could hardly hear his story.（保持句意基本相同） The old man’s voice was ________ low for us ________ hear his story. (7) The movie was so touching that I cried several times. (改为同义句)   It was ________ a touching movie ________ I cried several times. (8) The box is so heavy that I can’t carry it. (改为简单句) The box is ________ heavy ________ me to carry. (9) Monkey King cannot turn himself into a man unless he can hide his tail. (改为同义句) Monkey King cannot turn himself into a man ________ he ________ hide his tail. (10) If we don’t take action to protect the wetlands, the wild birds will lose their living homes. （改为同义句） The wild birds will lose their living homes ________ we ________ to protect the wetlands. 3、 单元语法提升练习 1. 语法选择 Last week, I had dinner at my British friend Tom’s house. I was a little nervous because I didn’t know much about English table manners. Tom told me, “Don’t bring food 1 the host asks you to.” So I only brought a small gift. When I arrived, Tom’s mother was still cooking. I offered to help, but she said, “Just sit down and relax.” I waited for everyone to sit 2 I sat down. Tom told me, “You should wait for the host 3 start eating.” So I didn’t touch my fork until Tom’s father picked up his knife and fork. At first, I was confused about how to use the knife and fork 4 . Tom said, “Hold the knife in your right hand 5 the fork in your left.” I tried my best, but it was 6 difficult 7 I almost dropped my fork. Tom smiled and said, “Don’t worry. If you get confused, just watch what 8 else does.” After the meal, I thanked the host and said that everything 9 delicious. Tom’s mother was very happy. I learned that good table manners can help us 10 a good impression on others. 1．A．if B．unless C．when D．because 2．A．before B．after C．as soon as D．until 3．A．for B．to C．of D．with 4．A．proper B．properly C．more proper D．most proper 5．A．but B．or C．and D．so 6．A．so B．such C．too D．very 7．A．that B．as C．like D．to 8．A．nobody B．anybody C．everybody D．somebody 9．A．is B．are C．was D．were 10．A．make B．making C．makes D．made 2. 翻译句子 (1) 我一坐在电视机前我妈就过来了。 (2) 除非公交车很拥挤，否则乘客们迫不及待地上车。 (3) 除非你每天复习，否则你会忘记这些新单词。 (4) 印象如此重要，以至于我不想说错或做错任何事情。 (5) 但是英式餐桌礼仪如此复杂，以至于我有点担心。 (6) David如此爱好阅读以至于他每天在这一方面花一小时。 (7) Amy一收到礼物就打开了。 (8) 不要轻易相信别人除非你很了解他。 学科网（北京）股份有限公司 $