Module 2【刷语法】时间状语从句(重点语法提升练)-2024-2025学年九年级英语上册单元模块满分必刷题（外研版）

2024-2025学年九年级英语上册单元模块满分必刷题（外研版） Module 2 Public holidays【刷语法】(重点语法提升练) 时间状语从句 考点一：时间状语从句 引导词 用法 例句 when when引导的时间状语从句中既可接延续性动词，也可接非延续性动词，多用一般过去时 They were talking happily when I walked past the door.当我从门前走过，他们正在开心地聊天。 while while强调主句和从句动作同时发生，所引导的时间状语从句只能用延续性动词，多用进行时态。 My mother was cooking while I was doing my homework. 当妈妈在做饭的时候，我在做作业。 not … until 主句的谓语动词为非延续性动词，主句要用否定式，从句用肯定式。 The bus won’t start until everybody gets on. 公共汽车直到每个人都上车才会发动。 since 主句谓语动词一般用现在完成时，从句谓语动词一般用一般过去时。 Five yeas has passed since we saw each other last time. 距离我们上次见面已经五年过去了。 before before 引导的从句表示主句的动作发生在从句动作之前。 We turned off the light before we left. 我们在离开前关了灯。 after after 引导的从句表示主句的动作发生在从句动作之后。 He went to bed after he finished his work. 他做完工作后就去睡觉了。 as soon as 若主句为一般将来时，从句常用一般现在时表将来。 I will tell him the news as soon as I see him. 我一看见他，就会告诉他这个消息。 一、单项选择 1．（2024·甘肃临夏·中考真题）Tom didn’t go to bed ________ his mother came back last night. A．until B．if C．because D．unless 2．（2024·黑龙江哈尔滨·模拟预测）My friend Kitty made a telephone call to me ________ she arrived in Shanghai yesterday. A．now that B．so that C．as soon as 3．（2024·黑龙江哈尔滨·三模）—Excuse me, do you know when Tom ________ tomorrow? —Sorry, I don’t know the exact time. When he ________ here, I will call you. A．will arrive; gets B．will arrive; will get C．arrives; will get 4．（2024·江苏南京·二模）Most people usually can’t understand parents’ love ________ they have their own children. A．if B．since C．until D．because 5．（2024·四川遂宁·二模）China’s AI cartoon Qianqiu shisong (千秋诗颂) will catch people’s attention _______ it appears. A．in order that B．as long as C．as soon as D．so that 6．（2024·江西吉安·三模）In the Chinese tradition, people won’t start to eat ________ the elders take their seats. A．after B．because C．until D．although 7．（2024·云南丽江·二模）You won’t know whether you can succeed ________ you do it yourself. A．when B．if C．until D．as soon as 8．（2024·甘肃武威·三模）—Where is Daniel? —After hearing about the news, he ran off like an excited child ________ I could stop him. A．unless B．until C．before D．except 9．（2024·山东青岛·二模）My little brother seldom cries. But when he _____, I can hardly think of ways to stop him. A．can B．has C．will D．does 10．（2024·上海杨浦·三模）It was an exciting moment for Mr. and Mrs. Wang _______ they learned they were going to have a baby. A．whether B．although C．when D．unless 11．（2024·河北唐山·二模）Life is like a mirror. _________ you smile at it, it will smile back. A．Though B．Unless C．Until D．When 12．（2024·江苏无锡·三模）My grandpa often tells me we must work hard to get more knowledge ________ we are young. A．since B．while C．if D．until 13．（2024·吉林白山·一模）—Did you find your dog? —Yes,it was sleeping under my bed________I was looking for it everywhere. A．while B．since C．unless 14．（2024·江西赣州·一模）—What can we do to save water? —Well, for example, we can save water by turning off the water ________ washing our hands. A．before B．until C．as soon as D．while 15．（2023九年级·安徽·专题练习）—I am nervous about the football match. —Take it easy. You will get a good result ________ you keep training hard. A．unless B．though C．as D．before 16．（2024·天津红桥·二模）He has studied very hard _________ he came to our class. A．when B．and C．since D．so 17．（2024·黑龙江哈尔滨·二模）It ________ 100 years since the Communist Party ________. A．was; was founded B．has been; was founded C．has been; founded 18．（2024·安徽亳州·二模）Mrs. Li has been with us ________ we came to junior high school. A．since B．if C．when D．while 19．（2024·安徽淮北·三模）Making paper cutting was so interesting that I spent more than four hours on it ________ I realized it. A．while B．after C．before D．since 20．（2024·河北石家庄·一模）We need to take action to save every drop of water ________ it is too late. A．before B．unless C．because D．until 21．（2024·河北·二模）Teenagers should do some housework ________ they finish their homework. A．until B．unless C．after D．because 22．（2024·河北邯郸·二模）She became famous in town ________ she won first prize in the singing competition. A．unless B．if C．after D．although 23．（2024·云南昆明·二模）—Mary, when did you go to bed last night? —I didn’t go to bed ________ I finished reading the novel The Three Body Problem. A．until B．although C．if D．after 24．（2024·江苏无锡·三模）The students decided they ________ as WWF volunteers as soon as the summer vacation came. A．worked B．will work C．have worked D．would work 25．（2024·广西贺州·一模）I was just falling asleep ______ I heard someone knocking at my door heavily. A．after B．when C．if 26．（23-24八年级上·天津宁河·期末）The boy was listening to music ________ he was riding his bike. A．when B．while C．after D．before 27．（2024·北京海淀·一模）Lisa ________ the Summer Palace twice since she came to Beijing. A．visits B．visited C．has visited D．was visiting 28．（23-24八年级下·江苏南京·阶段练习）It’s about two years ________ the young man became a soldier. A．when B．before C．since D．as 29．（2023·江苏无锡·二模）Don’t miss this chance. It must be years ________ you get another one. A．before B．after C．until D．since 30．（2024·上海普陀·二模）After Frank __________ the dinner, he went for a walk in the garden with his family. A．is eating B．eats C．will eat D．had eaten 31．（2024·安徽滁州·三模）Doctors and nurses look after the patients day and night. And they never stop treating them ________ the sick got well. A．if B．though C．until D．because 32．（2024·山东青岛·二模）—When will you come to Beijing? —I’ll call you _________ I arrive. A．although B．while C．as soon as D．until 33．（2024·吉林长春·一模）Betty called her parents excitedly _______ she got an offer of work. A．so that B．as soon as C．though D．before 34．（2024·北京平谷·一模）The old scientist will start his lecture as soon as he ________ to our school. A．gets B．get C．will get D．got 35．（23-24九年级下·全国·随堂练习）He didn’t get up ________ his mother ________ this morning. A．until; woke him up B．until; woke up him C．after; woke him up D．after; woke up him 36．（2024·河北承德·二模）You can’t leave ________ your work is finished. A．if B．until C．though D．since 37．（2024·甘肃武威·三模）—What time will we have our meeting this afternoon?   —Well, the meeting will be put off ________ the new manager comes. A．till B．though C．while D．if 38．（2024·黑龙江哈尔滨·二模）Boys and girls, don’t be nervous and put your whole heart into the test paper ________ you begin to think about the answers. Be confident. You can do it! A．therefore B．as soon as C．although 39．（2024·黑龙江鸡西·二模）—Ella, have you picked up your grandma at the airport yet? —Yes, Mom. I saw her ________ she walked out of the gate. A．though B．as soon as C．while 40．（2024·河北廊坊·一模）In Chinese families, people won’t start dinner ________ the elders take their seats. A．until B．when C．because D．after 41．（2024·广西河池·一模）Many people don’t realize the importance of health ________ they fall ill. A．after B．until C．if 42．（2024·吉林白山·一模）Some people won’t realize the importance of their health until they ________ it. A．losing B．loses C．have lost 43．（23-24九年级下·河北张家口·阶段练习）I will give the Chinese kite to Linda I see her. A．as soon as B．so that C．although D．unless 44．（2024·江苏扬州·一模）You never really knew a man ________ you stood in his shoes and walked around in them. A．since B．as C．until D．if 45．（23-24九年级下·全国·单元测试）Little Nancy is afraid of the dog. She will run away ________ she sees it. A．as soon as B．ever since C．even though D．so that 46．（2024·西藏·二模）We ________ our task until we finish it. A．didn’t stop B．will not stop C．stop D．stops 47．（23-24九年级下·江苏宿迁·阶段练习）Giant panda Ya Ya returned to its home in Beijing Zoo early on Monday ________ spending 20 years in the US. A．until B．before C．after D．during 48．（23-24九年级下·四川成都·阶段练习）________ I was getting on the bus, I found I had left my mobile phone at home. A．As B．Since C．Until 49．（2024九年级·全国·专题练习）In my opinion, teenagers should do some housework ________ they finish their homework. A．until B．since C．after D．unless 50．（2024九年级·全国·专题练习）Mandy has learned a lot about Chinese culture and customs ________ she came to China. A．while B．as soon as C．until D．since 51．（2024九年级·全国·专题练习）—Making friends is not easy. Sometimes it can take years ________ you become true friends with someone. —You are right. A．before B．after C．because D．unless 52．（2024九年级·全国·专题练习）—What were you doing at eight o’clock last night? —I was reading a book ________ you called me. A．when B．as soon as C．unless D．while 53．（2024九年级·全国·专题练习）Jack was about to close the window ________ his attention was caught by a bird. A．as B．since C．when D．while 54．（2024九年级·全国·专题练习）While my mother ________ some shopping, she happened to meet an old friend of hers. A．is doing B．was doing C．will do D．has done 55．（23-24九年级下·全国·单元测试）None of us knew what had happened ________ they told us about it. A．when B．until C．after D．because 56．（2024九年级下·广东·专题练习）Please tell Kate to call me when she ______ back to Shanghai tomorrow afternoon. A．comes B．came C．will come 57．（23-24九年级下·江西宜春·阶段练习）I’ll go to visit my aunt in England ________ the summer holidays start. A．since B．until C．as soon as D．unless 58．（2024·四川广元·二模）—Can you take a message to Tom? —Of course. I will tell him as soon as he _________. A．comes B．will come C．is coming D．has come 59．（2024·甘肃武威·一模）It has been about two months ________ she last heard from her mother. A．for B．since C．unless D．until 60．（23-24九年级下·江苏南通·阶段练习）—Is there anything we should pay special attention to during the coming exam? —Of course. Students should remain in their seats until all the papers ________. A．are collected B．will be collected C．collect D．will collect 参考答案： 1．A 【详解】句意：汤姆直到他妈妈昨晚回来才上床睡觉。 考查连词辨析。until直到；if如果；because因为；unless除非。分析句子可知，此处指汤姆直到妈妈回来才上床睡觉。not…until…“直到……才……”。故选A。 2．C 【详解】句意：昨天我的朋友Kitty一到上海就给我打了个电话。 考查连词辨析。now that既然；so that以便；as soon as一……就……。根据“My friend Kitty made a telephone call to me…she arrived in Shanghai yesterday”可知，此处表示前后句的两个动作几乎同时发生，应用as soon as引导时间状语从句。故选C。 3．A 【详解】句意：——打扰一下，你知道汤姆明天将在什么时候到吗？ ——对不起，我不知道确切的时间。当他到了这里我就给你打电话。 考查动词时态。第一句为宾语从句，主句时态为一般现在时，根据“tomorrow”可知，从句应用一般将来时will do结构，排除C；答句为when引导的时间状语从句，符合“主将从现”原则，从句为一般现在时，主语he为第三人称单数，谓语动词get应用三单形式gets，排除B。故选A。 4．C 【详解】句意：大多数人直到有了自己的孩子才懂得父母的爱。 考查连词辨析。if如果；since自从；until直到；because因为。根据“Most people usually can’t understand parents’ love ... they have their own children.”可知，直到自己有了孩子，才懂得父母的爱，用until引导时间状语从句。故选C。 5．C 【详解】句意：中国的AI动画片《千秋诗颂》一出现就会引起人们的注意。 考查连词。in order that为了，后跟句子；as long as只要；as soon as一……就……；so that以便，为了。根据“China’s AI cartoon Qianqiu shisong (千秋诗颂) will catch people’s attention…it appears.”可知，应是一亮相就会引起人们的关注，所以用as soon as引导时间状语从句，故选C。 6．C 【详解】句意：按照中国的传统，人们要等到长辈就座后才能开始吃饭。 考查连词辨析。after在……之后；because因为；until直到……；although虽然。根据“people won’t start to eat...the elders take their seats.”可知，是直到长辈就座后才能开始吃饭，not...until...“直到……才……”。故选C。 7．C 【详解】句意：直到你自己去做，你才能知道自己能否成功。 考查连词辨析。when当；if如果；until直到；as soon as一……就。根据“You won’t know whether you can succeed...you do it yourself.”可知是直到自己去做，才能知道自己是否能成功，not...until“直到……才”。故选C。 8．C 【详解】句意：——丹尼尔在哪里？——听到这个消息后，我还没来得及阻止他，他就像个兴奋的孩子一样跑掉了。 考查时间状语从句。unless除非；until直到；before在……之前；except除了。根据“he ran off like an excited child...I could stop him.”可知，在自己能够阻止他之前，他就跑掉了，应用before引导时间状语从句，故选C。 9．D 【详解】句意：我的弟弟很少哭。但当他哭的时候，我几乎想不出办法阻止他。 考查谓语动词的省略。can能，情态动词；has有，have的三单形式；will将，会，情态动词；does做，do的三单形式。根据“My little brother seldom cries. But when he...”可知when引导的时间状语从句与主句时态保持一致，用一般现在时。从句主语是he，谓语动词用cry，为了避免重复，可以使用does代替。故选D。 10．C 【详解】句意：当王夫妇得知他们要有孩子的时候，他们感到非常激动。 考查连词辨析。whether是否；although尽管，虽然；when当……时候；unless除非。根据“It was an exciting moment for Mr. and Mrs. Wang ... they learned they were going to have a baby.”可知，当他们知道他们将有孩子的时候，这对于王先生和王夫人而言，是一个激动人心的时刻；when符合语境。故选C。 11．D 【详解】句意：生活就像一面镜子。当你朝它微笑时，它也会对你微笑。 考查从属连词辨析。though尽管，可引导让步状语从句；unless除非，引导条件状语从句；until直到，引导时间状语从句；when当……时，引导时间状语从句。根据“...you smile at it, it will smile back”可知，此处表达当你朝它微笑时，when符合语境。故选D。 12．B 【详解】句意：我爷爷经常告诉我，我们必须趁着年轻努力学习，获得更多的知识。 考查连词辨析。since自从；while当……时；if如果；until直到……为止。根据“My grandpa often tells me we must work hard to get more knowledge...we are young.”可知，趁着正年轻，我们必须努力学习获得更多知识，此处应用while引导时间状语从句。故选B。 13．A 【详解】句意：——你找到你的狗了吗？——是的，当我到处寻找它的时候，它正在我的床下睡觉。 考查while引导时间状语从句。根据答句中的“it was sleeping...”及“I was looking for ...”可知，“它在床下睡觉”和“我正在寻找它”两个动作是同时发生的，应该用过去进行时。故选A。 14．D 【详解】句意：——我们能做些什么来节约用水？——嗯，例如，我们可以通过洗手时关水来节约用水。 考查连词辨析。before在……之前；until直到；as soon as一……就……；while与……同时。根据“turning off the water...washing our hands.”可知，洗手的时候关水可以节约用水，应用while引导时间状语从句，故选D。 15．C 【详解】句意：——我对足球赛感到紧张。——别紧张。当你继续努力时, 你就会取得好成绩。 考查连词辨析。unless除非；though虽然；as当……时；before在……之前；根据“You will get a good result… you keep training hard.”可知，是“当你继续努力时，你就会取得好成绩”。故选C。 16．C 【详解】句意：自从来到我们班级之后，他学习非常努力。 考查连词辨析。when当……时；and 和；since自从；so 所以。根据“He has studies very hard”可知，时态是现在完成时，“he came to our class”是一般过去时，所以句子是since引导的时间状语从句，故选C。 17．B 【详解】句意：共产党成立已经100年了。 考查动词时态。根据“since the Communist Party…”可知，第一个空应用现在完成时，其结构为“have/has+done”；主语“It”是第三人称单数形式，助动词应用has；be的过去分词是been。since引导的时间状语从句应用一般过去时，且主语和动词之间是动宾关系，应用一般过去时的被动语态，其结构为“was/were+done”；主语“the Communist Party”是第三人称单数形式，助动词应用was；found的过去分词是founded。故选B。 18．A 【详解】句意：李老师自我们到初中就和我们在一起。 考查连词。since自……以来；if如果；when当……时；while当……时。根据“has been with us”可知此处为“主句（现在完成时）+ since + 从句（一般过去时）”。故选A。 19．C 【详解】句意：剪纸是如此有趣，我花了四个多小时才意识到这一点。 考查连词辨析。while与……同时；after在……以后；before在……以前；since自从。根据“Making paper cutting was so interesting that I spent more than four hours on it ... I realized it.”可知，在我意识到剪纸有趣之前，我花了四小时在这上面，before符合题意。故选C。 20．A 【详解】句意：在一切太迟了之前，我们需要采取行动节约每一滴水。 考查连词辨析。before在……之前；unless除非；because因为；until直到……为止。由“it is too late”可知此处表示要在一切太迟了之前采取行动，用before引导时间状语从句。故选A。 21．C 【详解】句意：青少年应该在完成家庭作业之后做一些家务活。 考查连词辨析。until直到；unless除非；after在……之后；because因为。根据“do some housework”及“they finish their homework”可知，表达做完家庭作业之后做家务活，应用连词after引导时间状语从句。故选C。 22．C 【详解】句意：她在歌唱比赛中获得第一名后就在镇上出名了。 考查连词辨析。unless除非；if如果；after在……之后；although尽管。分析句子结构可知，此处是指她获得歌唱比赛第一名之后在小镇上出名了，应用after引导时间状语从句。故选C。 23．A 【详解】句意：——玛丽，你昨晚什么时候去睡觉的？——我直到读完小说《三体》才上床睡觉。 考查从属连词辨析。until直到；although虽然；if如果；after之后。根据“I didn’t go to bed…I finished reading the novel”可知，直到读完小说才睡觉，not…until直到……才，是固定搭配。故选A。 24．D 【详解】句意：学生们决定一到暑假就作为世界野生动物基金会的志愿者工作。 考查动词时态。根据“as soon as the summer vacation came”可知，此处是对过去的将来进行预测，因此时态为过去将来时，结构为would do。故选D。 25．B 【详解】句意：我刚要入睡，就听到有人重重地敲我的门。 考查连词辨析。after在……之后；when当……时；if如果。分析题干可知，该句表示当听到有人重重地敲我的门时，我刚要入睡，所以应用when引导时间状语从句，意为“当……时候”。故选B。 26．B 【详解】句意：那个男孩骑自行车时正在听音乐。 考查连词词义辨析。when当……时；while当……的时候；after在……以后；before在……以前。根据“The boy was listening to music”和“he was riding his bike”可知，都是过去进行时，两个动作同时发生。由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导。故选B。 27．C 【详解】句意：自从丽莎来北京后，已经参观颐和园两次了。 考查现在完成时。该句为since引导的时间状语从句，主句应用现在完成时，谓语结构为have/has+过去分词。故选C。 28．C 【详解】句意：这个年轻人当兵大约两年了。 考查连词辨析。when当……时；before在……以前；since自从； as因为。it is/has been+一段时间+since+一般过去时“做某事已经……”，是固定句型，故选C。 29．A 【详解】句意：不要错过这次机会，你一定要等很多年才能再得到另一次机会。 考查连词辨析。before在……之前；after在……之后；until直到……为止；since自从。根据“It must be years...you get another one.”可知，再得到这样的机会之前需要好多年时间。故选A。 30．D 【详解】句意：弗兰克吃完晚饭后，和家人一起去花园里散步。 考查动词时态。is eating现在进行时；eats吃，一般现在时；will eat一般将来时；had eaten过去完成时。此处是after引导的时间状语从句，根据“he went for a walk in the garden with his family”可知主句用的一般过去时，结合选项，从句用过去完成时符合，故选D。 31．C 【详解】句意：医生和护士日夜照顾病人。他们从不停止治疗，直到病人康复。 考查连词辨析。if如果；though虽然；until直到；because因为。根据“they never stop treating them...the sick got well”可知从不停止治疗，直到病人康复，用until连接。故选C。 32．C 【详解】句意：——你将什么时候来北京？——我一到达就给你打电话。 考查连词辨析。although尽管；while当……时；as soon as一……就；until直到。根据“I’ll call you”和“I arrive”可知应是一到达就打电话，故选C。 33．B 【详解】句意：贝蒂一得到工作机会就兴奋地给父母打电话。 考查连词辨析。so that以便，为了；as soon as一……就……；though虽然；before在……之前。根据“Betty called her parents excitedly…she got an offer of work.”可知，此处指的是“一得到工作机会就兴奋地给父母打电话”，因此此处用as soon as作连接词。故选B。 34．A 【详解】句意：那位老科学家一到我们学校就会开始他的演讲。 考查动词时态。as soon as“一……就……”，引导时间状语从句。主句为一般将来时，根据“主将从现”原则，从句用一般现在时。故选A。 35．A 【详解】句意：今天早上直到他妈妈叫醒他，他才起床。 考查连词辨析和动词短语。until直到；after在……以后。根据题干可知，第一空是not...until“直到……才”结构，排除CD；wake up是“动词+副词”结构，人称代词作宾语放中间。故选A。 36．B 【详解】句意：你必须完成工作才能离开。 考查连词辨析。if如果；until直到；though尽管；since自从。根据“You can’t leave...your work is finished.”可知是完成之后才能离开，是结构not…until“直到……才”。故选B。 37．A 【详解】句意：——今天下午我们什么时候开会？——嗯，会议将推迟到新经理来。 考查连词辨析。till直到；though虽然；while当；if如果。根据“the meeting will be put off...the new manager comes.”可知会议要推迟到新经理到来，用till引导时间状语从句。故选A。 38．B 【详解】句意：同学们，不要紧张，一开始思考答案就全心投入考卷。要自信。你能做到的！ 考查连词辨析。therefore因此；as soon as一……就……；although虽然。根据“put your whole heart into the test paper...you begin to think about the answers”可知，一旦你开始思考答案，就要全身心地投入到考卷中，用as soon as引导时间状语从句。故选B。 39．B 【详解】句意：——艾拉，你去机场接你奶奶了吗？——是的，妈妈。她一走出大门我就看见了她。 考查连词辨析。though尽管；as soon as一……就……；while当……时。根据“I saw her ...she walked out of the gate”可知，应是她一走出来我就看见了，用as soon as引导时间状语从句，故选B。 40．A 【详解】句意：在中国的家庭中，人们要等到长辈就座后才能开始吃饭。 考查连词辨析。until直到；when当；because因为；after在……之后。根据“people won’t start dinner...the elders take their seats.”可知是直到老人就座之后才能开始吃饭，not...until“直到……才”。故选A。 41．B 【详解】句意：许多人直到生病了才意识到健康的重要性。 考查连词辨析。after在……以后；until直到；if如果。根据“don’t realize the importance of health ...they fall ill”可知，直到生病才意识到健康很重要，not...until “直到……才”，固定用法，故选B。 42．C 【详解】句意：有些人直到失去健康才意识到健康的重要性。 考查时态。losing动名词；loses一般现在时三单形式；have lost现在完成时。根据“until they ... it.”可知，此处是until引导的时间状语从句，主语they，缺少谓语，可排除losing和loses，用现在完成时表示动作已完成，“已经失去”。故选C。 43．A 【详解】句意：当我一看到琳达我就会把中国风筝送给她。 考查连词辨析。as soon as一……就，引导时间状语从句；so that以便于，引导结果状语从句；although尽管，引导让步状语从句；unless除非，引导条件状语从句。根据“I see her”表示的主语动作发生的时间，应为时间状语从句。故选A。 44．C 【详解】句意：直到你站在一个人的立场上，你才会真正了解他。 考查连词辨析。since自从，既然；as当……时候，由于，正如；until直到；if如果。根据空前后的句子可知，此处主从句符合结构not…until“直到……才”，主句否定词为“never”，故选C。 45．A 【详解】句意：小南希很怕这只狗。她一看到它就会跑开。 考查连词。as soon as一……就；ever since自从；even though虽然；so that以便。根据“Little Nancy is afraid of the dog.”可知是指她一看到它就会跑开。故选A。 46．B 【详解】句意：我们直到完成任务才停止工作。 考查动词时态。根据“until we finish it”可知，本句为until引导的时间状语从句，遵循“主将从现”原则，主句应用一般将来时，not...until...表示“直到……才……”，故选B。 47．C 【详解】句意：大熊猫丫丫在美国度过20年后，于星期一早晨返回了北京动物园的家。 考查连词。until直到；before在……之前；after在……之后；during在……期间。根据“spending 20 years in the US”可知，应该是“在美国呆了20年后”，用after引导时间状语从句。故选C。 48．A 【详解】句意：句意：当我上公交车时，我发现我把手机落在家里了。 考查连词。As当……时；Since自……以来；Until直到……为止。根据“...I was getting on the bus, I found I had left my mobile phone at home.”可知，当我上公交车时，我发现我把手机落在家里了。故选A。 49．C 【详解】句意：在我看来，青少年在完成家庭作业后应该做一些家务。 考查连词辨析。until直到；since自从；after在……之后；unless除非。根据“teenagers should do some housework...they finish their homework.”可知是完成作业之后应该做一些家务。故选C。 50．D 【详解】句意：自从曼迪来到中国以来，她学到了很多关于中国文化和习俗的知识。 考查连词辨析。while当；as soon as一……就；until直到；since自从。根据“Mandy has learned a lot about Chinese culture and customs...she came to China.”可知是自从来中国，她就学到了很多关于中国文化和习俗的知识，用since引导时间状语从句。故选D。 51．A 【详解】句意：——交朋友不容易。有时候，你需要花上几年的时间才能和某人成为真正的朋友。——你说的对。 考查连词的用法。before在……之前；after在……之后；because因为；unless除非。根据“Making friends is not easy.”及空格前后句意可推断出，在成为真正的朋友之前会花费好几年。故选A。 52．A 【详解】句意：——昨晚八点钟你在干什么？——你打电话给我的时候我正在看书。 考查从属连词辨析。when当……时；as soon as一……就；unless除非；while当……时。根据“you called me.”可知，设空处后为非延续性动词，指的是“当你打电话给我的时候”。故选A。 53．C 【详解】句意：杰克正要关上窗户，突然一只鸟引起了他的注意。 考查连词辨析。as随着；since自从；when当；while当。根据“Jack was about to close the window...his attention was caught by a bird”可知此处是结构be about to do sth. when...“正要做某事这时（突然）……”。故选C。 54．B 【详解】句意：当我的妈妈正在购物的时候，她碰巧见到了她的一位老朋友。 考查动词的时态。while引导的时间状语从句，两个动作同时发生，前一个是延续性动作，用过去进行时was doing表示正在购物。故选B。 55．B 【详解】句意：直到他们告诉我们，我们才知道发生了什么事。 考查until引导时间状语从句。when在……时候；until直到；after在……之后；because因为。根据“None of us knew what had happened...they told us about it.”可知，我们当中没有一个人知道发生了什么事，直到他们告诉了我们，我们才知道。故until符合语境。故选B。 56．A 【详解】句意：请告诉凯特明天下午回到上海时给我打电话。 考查时态。根据“Please tell Kate to call me when she ... back to Shanghai tomorrow afternoon.”可知，when引导的时间状语从句，从句用一般现在时，主语为she，动词用第三人称单数。故选A。 57．C 【详解】句意：暑假一开始，我就去英格兰去看望我的姑姑。 考查连词。since既然，自从；until直到；as soon as一……就……；unless除非。根据“I’ll go to visit my aunt in England...the summer holidays start.”以及“the summer holidays start”可知是一放暑假就去看望姑姑，用as soon as来引导时间状语从句，故选C。 58．A 【详解】句意：——你能给汤姆捎个口信吗？——当然可以。他一来我就告诉他。 考查动词时态。设空所在句是as soon as引导的时间状语从句，时态上遵循“主将从现”原则，所以空处时态用一般现在时，主语是he，谓语动词用三单形式，故选A。 59．B 【详解】句意：自从她上次收到母亲的信以来，已经有两个月了。 考查连词辨析。for因为；since自从；unless除非；until直到……为止。根据“It has been about two months … she last heard from her mother.”可知，此处是指自从上次收到她母亲来信以来有两个月了，用since引导时间状语从句。故选B。 60．A 【详解】句意：——在即将到来的期末考试中，我们有什么需要特别注意的吗？——当然。学生们应该坐在座位上，直到所有的试卷都收齐为止。 考查被动语态。句子是until引导的时间状语从句，遵循主情从现的原则，从句使用一般现在时，且主语the papers和collect是被动关系，因此使用一般现在时的被动语态are collected。故选A。 原创精品资源学科网独家享有版权，侵权必究！6 学科网（北京）股份有限公司 $$