Unit 4 Weather and our lives 重点语法：it的用法精讲讲练50题-2025-2026学年六年级英语下册重难点讲练全攻略（沪教版五四制）

**基本信息** 以“分类精讲+针对精练”构建it用法系统训练，通过核心用法分类、固定句型归纳及易错点警示，形成“概念-例句-应用”逻辑闭环，提升语言应用能力与语法思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |语法知识精讲|4类用法（含经典例句）|分类讲解it指代功能、形式主/宾语等核心用法，提炼固定句型及高频易错点|从具体指代（单数名词/天气时间距离）到抽象功能（形式主/宾语）的递进式逻辑| |语法知识精练|50题|针对4类用法设计梯度训练，强化固定句型应用与易错点辨析|覆盖中考高频考点，实现“讲-练-评”知识内化闭环|

2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 学校:___________姓名：___________班级：___________考号：___________ Unit4 Weather and our lives 重点语法：it的用法精讲讲练50题 语法知识精讲 语法核心 it（代词），初中阶段核心用法分为4类，均为高频考点，侧重区分指代功能与固定句型 用法分类1：指代前文提到的单数名词 核心说明：指代前文出现过的单数可数名词或不可数名词（避免重复），指代单数人时需结合语境（多指代婴儿、未知性别者） 经典例句（含翻译）： 1. This is a pen. It is red.（这是一支钢笔，它是红色的。） 2. The baby is crying. It is hungry.（那个婴儿在哭，它饿了。） 易错点：不可用it指代前文的复数名词（复数需用they/them） 用法分类2：指代天气、时间、距离 核心说明：作形式主语，无实际意义，仅用于指代天气、时间、距离等抽象概念，固定搭配高频出现 经典例句（含翻译）： 1. It is sunny today.（今天天气晴朗。） 2. It is 7 o’clock now.（现在是7点钟。） 3. It is two kilometers from my home to school.（从我家到学校有两公里。） 易错点：此类用法中，it不可省略，不能说“Is sunny today” 用法分类3：作形式主语 核心说明：替代后面的不定式（to do）、动名词（doing）或从句，使句子结构更均衡，避免头重脚轻 固定句型：It is+形容词/名词+to do sth.（做某事是……的）；It is+形容词+that从句 经典例句（含翻译）： 1. It is easy to learn English.（学英语很容易。） 2. It is important that we study hard.（我们努力学习很重要。） 易错点：不可把真正的主语（不定式/从句）放在句首，避免句子冗长 用法分类4：作形式宾语 核心说明：替代宾语从句或不定式，放在谓语动词后，真正的宾语放在句末，常见于find、think、feel等动词后 固定句型：主语+find/think/feel+it+形容词+to do sth./that从句 经典例句（含翻译）： 1. I find it interesting to watch TV.（我发现看电视很有趣。） 2. She thinks it necessary that we practice speaking.（她认为我们练习口语是必要的。） 易错点：不可省略it，不能说“I find interesting to watch TV” 高频易错汇总 1. it只能指代单数名词/不可数名词，复数需用they/them； 2. 指代天气、时间、距离时，it不可省略； 3. 形式主语/形式宾语中，it不可省略，真正的主语/宾语放句末； 4. 不指代前文的人（除婴儿、未知性别者外） 语法知识精练 1．—What’s this? — _________. A．It’s pen B．This is pen C．It’s a pen D．This is an pen 2．It is interesting for students ________ part in the school’s Arts and Sports Festival. A．takes B．taking C．to take D．will take 3．It’s ________ to lend your books ________ your classmates. A．polite; for B．polite; to C．politely; for D．politely; to 4．It’s ________ to say “thank you” when other people help you. A．polite B．difficult C．exciting D．playful 5．There are so many important things in the textbook. ________ difficult for us ________ all the information. A．It’s, remembering B．It’s, to remember C．They are, remembering D．They are, to remember 6．It is difficult for Jane ________ maths, but she still works hard on it. A．learn B．learns C．learning D．to learn 7．Helen likes history. She thinks it’s exciting ________ about the past. A．to learn B．learn C．learning D．learns 8．It takes him half an hour ________ to the nature park. A．ride B．rides C．to ride D．riding 9．—How long does it take ______ a traditional Chinese kite? —About three hours if you are careful enough. A．make B．making C．to make D．made 10．—Could I go swimming with my friend, Dad? —No, it’s very dangerous for you kids ________ swimming without adults. A．go B．going C．to go D．went 11．It’s dangerous ________ in the river alone. A．swim B．swimming C．to swim D．swam 12．—________ does it take you ________ to school from your home? —About 20 minutes. A．How long; walking B．How long; to walk C．How far; walking D．How far; to walk 13．—It’s easy ________ from Xi’an to Beijing by high-speed railway. —Yes, it’s about a ________. A．to travel: four hours ride B．traveling; four hour’s ride C．traveling; four-hours ride D．to travel; four-hour ride 14．The variety of accents made ________ difficult for us to understand each other. A．one B．it C．this D．that 15．What ________ are you doing? It’s very careless ______ you to make the same mistake again. A．in earth; of B．to earth; for C．on the earth; for D．on earth; of 16．It’s fun for us ________ to the rhythm of rock music. A．dance B．dancing C．to dance D．danced 17．It ________ me one hour and a half ________ my homework the day before yesterday. A．took; to do B．took; doing C．takes; to do D．takes; doing 18．My home is far from my school. And ________usually takes me about an hour and a half to get to my school. A．that B．this C．one D．it 19．—How beautiful the street is! —Yes, it is. It ________ the workers a week ________ all the work. A．take; finish B．take; to finish C．takes; finishing D．takes; to finish 20．Hurry up! It’s time _________ home. A．go B．go to C．going D．to go 21．—________ is it from Mianyang to Chengdu? —I’m not sure, but it ________ about two hours to get there by bus. A．How soon; takes B．How far; takes C．How fast; took D．How about; took 22．________ is very kind of Lisa to tell Yiming the best time to visit London. A．This B．It C．There D．She 23．During the UK heatwave, ________ was hard for some schools to keep students cool. A．there B．this C．that D．it 24．It’s important ________ on time for class every day. A．arrive B．arrives C．arriving D．to arrive 25．Young people find ________ hard to have three meals a day because of busy work. A．it B．that C．this D．its 26．He made ________ quite clear that he wouldn’t change his mind. A．this B．that C．it D．what 27．He finds ________ difficult to understand the difference between American English and British English. A．it B．them C．that D．this 28．—All of us thought ________ dangerous for children to play with fire. —Yes. It’s important ________ to be safe all the time. A．it is; of them B．it; for them C．that is; of them D．that; for them 29．I found ________ impossible to solve the problem without his help. A．its B．the C．it D．that 30．The twins look the same, even their father finds ________ difficult to tell them from each other. A．that B．this C．it D．those 31．______ is the children’s dream to have a bridge between their school and the village. A．It B．This C．That D．These 32．It is convenient (方便的) for us ________ things online. A．buy B．to buy C．buying D．bought 33．It’s good ________ children ________ milk. A．for；drink B．to；drinking C．for；to drink D．with；to drink 34．—Is it great fun _________around the world with your friends? —Yes. We can have fun _________the beautiful sights on the way. A．to travel, enjoying B．travelling, to enjoy C．traveling, enjoying D．to travel;to enjoy 35．________ difficult for the little plants ________ to the new pots at first. A．It’s; adapt B．It’s; to adapt C．That’s; adapt D．That’s; to adapt 36．—I’m planning to go to Sanya this Spring Festival. How’s the weather there? —Not so hot. Sometimes ________ is very cool. A．this B．that C．one D．it 37．—I’m planning to go to Sanya this winter holiday. How’s the weather there? —Not so hot. Sometimes _________ is very cool. A．this B．that C．one D．it 38．________ is sunny. Let’s go mountain climbing. A．It B．That C．This D．They 39．—_______ is the weather in Beijing? —_______ warm and sunny. A．What; It’s B．How; It’s C．How; It D．What; It 40．—Who were you talking with on the phone just now? —________ was my brother. A．It B．He C．She D．Simon 41．—Who ________ your English teacher, Tom? —________ Miss Green. A．is; It’s B．are; It’s C．is; He is D．are; Its 42．Linda, there is somebody knocking at the door. Go and see who ________ is. A．he B．she C．it D．this 43．—Someone is knocking on the door. —________ must be Jim. He is here to give back my bike. A．He B．This C．It D．They 44．It’s hard for the students __________ a healthy diet. We should help them with it. A．have B．having C．has D．to have 45．It’s good for us to ________ a good habit of brushing teeth in the childhood. A．developing B．show C．develop D．showing 46．________ is very honest of you ________ the money you found on the playground. A．That; to return B．This; returning C．It; to return D．It; returning 47．It’s easy ________ each other if we don’t communicate clearly. A．understand B．understanding C．to understand D．to misunderstand 48．It ________ me half an hour ________ my homework every day. A．takes; to do B．takes; doing C．spends; doing D．spends; to do 49．We all thought ________ necessary for you to spend as much time as you could ________ English. A．that; improving B．it is; to improve C．it; improve D．it was; improving 50．Scientists made ________ possible to use robots to clean the rooms. A．it is B．that it C．it D．it’s 2 同步新教材，周周有练习，月月有重点！ 5 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 学校:___________姓名：___________班级：___________考号：___________ Unit4 Weather and our lives 重点语法：it的用法精讲讲练50题 语法知识精讲 语法核心 it（代词），初中阶段核心用法分为4类，均为高频考点，侧重区分指代功能与固定句型 用法分类1：指代前文提到的单数名词 核心说明：指代前文出现过的单数可数名词或不可数名词（避免重复），指代单数人时需结合语境（多指代婴儿、未知性别者） 经典例句（含翻译）： 1. This is a pen. It is red.（这是一支钢笔，它是红色的。） 2. The baby is crying. It is hungry.（那个婴儿在哭，它饿了。） 易错点：不可用it指代前文的复数名词（复数需用they/them） 用法分类2：指代天气、时间、距离 核心说明：作形式主语，无实际意义，仅用于指代天气、时间、距离等抽象概念，固定搭配高频出现 经典例句（含翻译）： 1. It is sunny today.（今天天气晴朗。） 2. It is 7 o’clock now.（现在是7点钟。） 3. It is two kilometers from my home to school.（从我家到学校有两公里。） 易错点：此类用法中，it不可省略，不能说“Is sunny today” 用法分类3：作形式主语 核心说明：替代后面的不定式（to do）、动名词（doing）或从句，使句子结构更均衡，避免头重脚轻 固定句型：It is+形容词/名词+to do sth.（做某事是……的）；It is+形容词+that从句 经典例句（含翻译）： 1. It is easy to learn English.（学英语很容易。） 2. It is important that we study hard.（我们努力学习很重要。） 易错点：不可把真正的主语（不定式/从句）放在句首，避免句子冗长 用法分类4：作形式宾语 核心说明：替代宾语从句或不定式，放在谓语动词后，真正的宾语放在句末，常见于find、think、feel等动词后 固定句型：主语+find/think/feel+it+形容词+to do sth./that从句 经典例句（含翻译）： 1. I find it interesting to watch TV.（我发现看电视很有趣。） 2. She thinks it necessary that we practice speaking.（她认为我们练习口语是必要的。） 易错点：不可省略it，不能说“I find interesting to watch TV” 高频易错汇总 1. it只能指代单数名词/不可数名词，复数需用they/them； 2. 指代天气、时间、距离时，it不可省略； 3. 形式主语/形式宾语中，it不可省略，真正的主语/宾语放句末； 4. 不指代前文的人（除婴儿、未知性别者外） 语法知识精练 1．—What’s this? — _________. A．It’s pen B．This is pen C．It’s a pen D．This is an pen 【答案】C 【详解】句意：——这是什么？——它是一支钢笔。 考查指示代词和冠词的用法。在英语中，回答“What’s this?”时，通常用“It’s a/an+名词”结构，而不用“This is…”。且pen是以辅音音素开头，应用a而不是an。故选C。 2．It is interesting for students ________ part in the school’s Arts and Sports Festival. A．takes B．taking C．to take D．will take 【答案】C 【详解】句意：学生们参加学校的艺术体育节是很有趣的。 考查非谓语动词。根据“It is interesting for students…part in the school’s Arts”可知，此处是“It is+形容词 +for sb. to do sth.”句型，意为“对某人来说做某事是……的”，其中it是形式主语，真正的主语是后面的动词不定式to do sth.。因此空格处应填动词不定式to take。take part in是固定短语，意为“参加”。故选C。 3．It’s ________ to lend your books ________ your classmates. A．polite; for B．polite; to C．politely; for D．politely; to 【答案】B 【详解】句意：把你的书借给你的同学是礼貌的。 polite礼貌的；politely礼貌地；for为了；to给。此句为It is+形容词+to do sth.“做某事是……的”结构，第一个空用形容词polite；lend sth. to sb.意为“把某物借给某人”，第二个空用介词to。 4．It’s ________ to say “thank you” when other people help you. A．polite B．difficult C．exciting D．playful 【答案】A 【详解】句意：当别人帮助你时，说“谢谢”是礼貌的。 polite礼貌的；difficult困难的；exciting令人兴奋的；playful顽皮的。根据“say ‘thank you’ when other people help you”可知，别人帮助时说谢谢是“礼貌的”行为，应填polite。 5．There are so many important things in the textbook. ________ difficult for us ________ all the information. A．It’s, remembering B．It’s, to remember C．They are, remembering D．They are, to remember 【答案】B 【详解】句意：课本里有太多重要的知识点，我们很难记住所有内容。 考查it固定句型。根据“...difficult for us...all the information.”可知，此处应用“It’s+adj.+for sb. to do sth.”句型表示“对于某人来说，做某事是……的”，其中it作形式主语，真正的主语为不定式短语。故选B。 6．It is difficult for Jane ________ maths, but she still works hard on it. A．learn B．learns C．learning D．to learn 【答案】D 【详解】句意：对简来说，学习数学很困难，但她仍然努力学习。 考查非谓语动词。此句为句型“it is+形容词+for sb to do sth”，表示“对某人来说做某事是……的”，it作形式主语，真正的主语是后面的动词不定式。故选D。 7．Helen likes history. She thinks it’s exciting ________ about the past. A．to learn B．learn C．learning D．learns 【答案】A 【详解】句意：海伦喜欢历史。她认为了解过去是令人兴奋的。 考查非谓语动词。在“It’s+形容词+to do sth.”结构中，it作形式主语，动词不定式作真正主语，表示“做某事是……的”。此处“it’s exciting”后应接不定式“to learn”构成固定句型。故选A。 8．It takes him half an hour ________ to the nature park. A．ride B．rides C．to ride D．riding 【答案】C 【详解】句意：他骑自行车去自然公园要花半小时。 考查it句型。ride骑，动词原形；rides骑，第三人称单数形式；to ride骑，动词不定式；riding骑，动名词/现在分词。句型“It takes sb. some time to do sth.”表示“做某事花费某人多长时间”，其中“to do”为动词不定式作真正主语。根据该固定搭配，此处应填“to ride”。故选C。 9．—How long does it take ______ a traditional Chinese kite? —About three hours if you are careful enough. A．make B．making C．to make D．made 【答案】C 【详解】句意：——做一个传统的中国风筝需要多长时间？——如果你足够仔细的话，大约三个小时。 考查固定句型。make 制作（动词原形）；making 制作（动名词/现在分词）；to make 制作（动词不定式）；made 制作（过去式/过去分词）。根据问句中的“How long does it take...”可知，此处是固定句型“It takes (sb.) some time to do sth.”，表示“做某事花费某人多长时间”，因此空格处应填动词不定式to make。故选C。 10．—Could I go swimming with my friend, Dad? —No, it’s very dangerous for you kids ________ swimming without adults. A．go B．going C．to go D．went 【答案】C 【详解】句意：——爸爸，我可以和我的朋友去游泳吗？——不行，对你们这些孩子来说，没有大人陪同去游泳是很危险的。 考查it固定句型。go去，动词原形；going去，动名词/现在分词；to go去，不定式；went去，过去式。“It is+adj.+for sb. to do sth.”，意为“对某人来说做某事是……”，因此后面应接不定式“to go”作真正主语。故选C。 11．It’s dangerous ________ in the river alone. A．swim B．swimming C．to swim D．swam 【答案】C 【详解】句意：独自在河里游泳是危险的。 考查it固定句型。swim游泳，动词原形；swimming游泳，动名词/现在分词；to swim游泳，动词不定式；swam游泳，过去式。根据“It is+形容词+to do sth. ”是固定句型，表示“做某事是……的”，此处应使用动词不定式作真正主语。故选C。 12．—________ does it take you ________ to school from your home? —About 20 minutes. A．How long; walking B．How long; to walk C．How far; walking D．How far; to walk 【答案】B 【详解】句意：——从你家到学校要花多长时间？——大约 20 分钟。 How long多长时间；How far多远。根据“About 20 minutes.”可知，就时长提问要用how long，how far用于询问距离；根据句型it takes sb some time to do sth“做某事花费某人多少时间”可知，第二空要填不定式to walk。 13．—It’s easy ________ from Xi’an to Beijing by high-speed railway. —Yes, it’s about a ________. A．to travel: four hours ride B．traveling; four hour’s ride C．traveling; four-hours ride D．to travel; four-hour ride 【答案】D 【详解】句意：——从西安乘高铁到北京很容易。——是的，大约是一段四小时的行程。 to travel动词不定式；traveling动名词/现在分词； four hours ride错误表达；four-hours ride错误表达；four-hour ride四个小时的行程。第一空：固定句型It’s+形容词+to do sth. 表示“做某事是……的”，因此应使用不定式 to travel，排除 B、C 选项。第二空：复合形容词作定语时，中间用连字符连接，且名词用单数形式，即four-hour。 14．The variety of accents made ________ difficult for us to understand each other. A．one B．it C．this D．that 【答案】B 【详解】句意：口音的多样性使我们互相理解很困难。 one一个；it它；this这个；that那个。固定结构：make it+形容词+for sb. to do sth.，其中it是形式宾语，真正的宾语是后面的不定式to understand each other。 15．What ________ are you doing? It’s very careless ______ you to make the same mistake again. A．in earth; of B．to earth; for C．on the earth; for D．on earth; of 【答案】D 【详解】句意：你到底在做什么？你又犯了同样的错误，真是太粗心了。 on earth是固定搭配，意为“到底，究竟”，用于加强疑问语气，on the earth意为“在地球上”，故第一空填on earth。在“It’s+adj.+of/for+sb.+to do sth.”句型中，若形容词说明人的性格特征（如careless“粗心的”），介词用of，若说明事物性质，介词用for。此处careless形容人，故第二空填of。 16．It’s fun for us ________ to the rhythm of rock music. A．dance B．dancing C．to dance D．danced 【答案】C 【详解】句意：跟着摇滚音乐的节奏跳舞很有趣。 It’s fun to do sth.是固定句型，it作形式主语，此处是动词不定式作真正的主语，应填to dance。 17．It ________ me one hour and a half ________ my homework the day before yesterday. A．took; to do B．took; doing C．takes; to do D．takes; doing 【答案】A 【详解】句意：前天我花费了一个半小时做我的家庭作业。 时间状语the day before yesterday表明时态是一般过去时，动词需用过去式took；句型“It takes/took sb. some time to do sth.”表示“做某事花费某人一些时间”，It是形式主语，真正的主语用动词不定式to do。应填took；to do。 18．My home is far from my school. And ________usually takes me about an hour and a half to get to my school. A．that B．this C．one D．it 【答案】D 【详解】句意：我家离学校很远。我通常需要大约一个半小时才能到达学校。 that那个；this这个；one一个；it它。根据“...usually takes me about an hour and a half for me to get to my school.”可知，此处是“It takes sb. some time to do sth.”句型，表示“花费某人多长时间做某事”，it作形式主语，真正的主语是动词不定式。应填it。 19．—How beautiful the street is! —Yes, it is. It ________ the workers a week ________ all the work. A．take; finish B．take; to finish C．takes; finishing D．takes; to finish 【答案】D 【详解】句意：——这条街道多么漂亮啊！——是的，它是。完成所有的工作花费了工人们一周的时间。 固定句型It takes sb. some time to do sth.意为“做某事花费某人多少时间”，It作形式主语，谓语动词需与It保持一致用第三人称单数 takes，后接动词不定式to finish作真正主语。故选D。 20．Hurry up! It’s time _________ home. A．go B．go to C．going D．to go 【答案】D 【详解】句意：快点！到回家的时间了。 It’s time to do sth“到做某事的时候了”，此处用动词不定式to go。 21．—________ is it from Mianyang to Chengdu? —I’m not sure, but it ________ about two hours to get there by bus. A．How soon; takes B．How far; takes C．How fast; took D．How about; took 【答案】B 【详解】句意：——从绵阳到成都有多远？——我不确定，但是乘公交车到那里大约花费两个小时。 根据“from Mianyang to Chengdu”可知是询问两地之间的距离，应用How far提问，固定句型“It takes some time to do sth.”表示“花费多少时间做某事”，描述客观事实用一般现在时，主语it是第三人称单数，谓语动词用takes。 22．________ is very kind of Lisa to tell Yiming the best time to visit London. A．This B．It C．There D．She 【答案】B 【详解】句意：Lisa告诉Yiming去伦敦旅游的最佳时间，这很贴心。 This这个；It它；There那里；She她。根据“_____ is very kind of...”可知，此处考查It is+形容词+of sb.+to do sth.结构，表示“某人做某事真……”。应填It。 23．During the UK heatwave, ________ was hard for some schools to keep students cool. A．there B．this C．that D．it 【答案】D 【详解】句意：在英国热浪期间，对一些学校来说，让学生保持凉爽是一件很困难的事。 there那里；this这个；that那个；it它。 原句符合固定句型It is/was+形容词+for sb. to do sth.，意为“对某人来说做某事是……的”，其中it在这里作形式主语，真正的主语是后面的不定式to keep students cool，其他选项均无法充当形式主语。 24．It’s important ________ on time for class every day. A．arrive B．arrives C．arriving D．to arrive 【答案】D 【详解】句意：每天按时到教室上课很重要。考查动词不定式作主语。 根据固定句型“It’s+adj.+to do sth.”可知，It作形式主语，真正的主语是动词不定式。应填to arrive。 25．Young people find ________ hard to have three meals a day because of busy work. A．it B．that C．this D．its 【答案】A 【详解】句意：年轻人因为工作繁忙，发现每天吃三餐很难。 考查代词。it它；that那；this这；its它的。固定结构find it+形容词+to do sth“发现做某事是怎么样的”，其中“it”是形式宾语，真正的宾语是后面的动词不定式“to have three meals a day”。故选A。 26．He made ________ quite clear that he wouldn’t change his mind. A．this B．that C．it D．what 【答案】C 【详解】句意：他明确表示他不会改变主意。 考查it的用法。this这个，指示代词；that那个，指示代词；it它，人称代词；what什么，疑问代词或连接代词。根据分析句子可知，此处考查：“make it+adj.+that从句”的固定结构，其中it作形式宾语，真正的宾语是后面的that从句。故选C。 27．He finds ________ difficult to understand the difference between American English and British English. A．it B．them C．that D．this 【答案】A 【详解】句意：他发现很难理解美式英语和英式英语的区别。 考查it的用法。it它；them他们；that那个；this这个。分析句子可知，此处是“find it+adj.+to do sth”结构，其中it作形式宾语，代替后面的动词不定式（真正宾语）。故选A。 28．—All of us thought ________ dangerous for children to play with fire. —Yes. It’s important ________ to be safe all the time. A．it is; of them B．it; for them C．that is; of them D．that; for them 【答案】B 【详解】句意：——我们都认为孩子们玩火很危险。——是的。对他们来说，始终保持安全是很重要的。 考查it作形式宾语和it固定句型。第一空为“think it adj for sb to do”句型，it作形式宾语，真正的宾语是其后的不定式；第二空为“it’s important for sb to do”句型，意为“对某人来说做某事是重要的”，故选B。 29．I found ________ impossible to solve the problem without his help. A．its B．the C．it D．that 【答案】C 【详解】句意：我发现没有他的帮助，解决这个问题是不可能的。 考查it作形式宾语的用法。its它的；the定冠词；it它；that那个。在“find it+adj.+to do”结构中，it作形式宾语，后面的不定式短语“to solve the problem”是真正的宾语。为了避免头重脚轻，用it作形式宾语代替真正的宾语。故选C。 30．The twins look the same, even their father finds ________ difficult to tell them from each other. A．that B．this C．it D．those 【答案】C 【详解】句意：双胞胎看起来一模一样，甚至他们的父亲发现很难区分他们。 考查形式宾语it的用法。分析句子可知，此处作finds的宾语，真正宾语是“to tell them from each other”，故用it作形式宾语。find it difficult to do sth表示“发现做某事很难”。故选C。 31．______ is the children’s dream to have a bridge between their school and the village. A．It B．This C．That D．These 【答案】A 【详解】句意：孩子们的梦想是在学校和村庄之间架起一座桥梁。 考查it的用法。It它；This这个；That那个；These这些。根据“to have a bridge between their school and the village.”可知，这是真正的主语。在英语中，当不定式、从句等作主语时，为了避免主语太长，头重脚轻，通常会在句首使用形式主语it，而把真正的主语放在句末。故选A。 32．It is convenient (方便的) for us ________ things online. A．buy B．to buy C．buying D．bought 【答案】B 【详解】句意：我们在网上买东西很方便。 考查it的固定句型。根据题干可知此处是“it is+adj.+for sb.+to do sth.”句式，故空处应用动词不定式to buy，故选B。 33．It’s good ________ children ________ milk. A．for；drink B．to；drinking C．for；to drink D．with；to drink 【答案】C 【详解】句意：喝牛奶对孩子有好处。 考查短语。It is+形容词+for sb. to do sth.意为 “做某事对某人怎么样”。故选C。 34．—Is it great fun _________around the world with your friends? —Yes. We can have fun _________the beautiful sights on the way. A．to travel, enjoying B．travelling, to enjoy C．traveling, enjoying D．to travel;to enjoy 【答案】A 【详解】句意：——和我们的朋友周游世界是不是很有趣？——是的。我们可以在途中欣赏美丽的风景。 考查it句型和动词短语。It is+形容词+to do sth.“干某事怎么样”，其中it是形式主语，真正的主语是动词不定式。It is great fun to do sth.做某事是很有趣的，故第一个空使用to travel；have fun doing sth.做某事很开心。故选A。 35．________ difficult for the little plants ________ to the new pots at first. A．It’s; adapt B．It’s; to adapt C．That’s; adapt D．That’s; to adapt 【答案】B 【详解】句意：对于这些小植物来说，一开始适应新花盆很困难。 考查固定句型“It is+adj.+for sb.+to do sth.”（对某人来说做某事是……的）。该句型中，it作为形式主语，真正的主语是后面的不定式短语“to adapt to the new pots”。选项A和C缺少“to”，不符合句型结构；选项D用“That’s”开头，不能充当形式主语。故选B。 36．—I’m planning to go to Sanya this Spring Festival. How’s the weather there? —Not so hot. Sometimes ________ is very cool. A．this B．that C．one D．it 【答案】D 【详解】句意：——我计划这个春节去三亚。那里天气怎么样？——不是很热。有时很凉爽。 考查代词辨析。this这；that那；one一个；it它。根据“Sometimes...is very cool”可知，此处指天气凉爽，应填“it”代指天气。故选D。 37．—I’m planning to go to Sanya this winter holiday. How’s the weather there? —Not so hot. Sometimes _________ is very cool. A．this B．that C．one D．it 【答案】D 【详解】句意：——我计划这个寒假去三亚。那里天气怎么样？——不是很热。有时很凉爽。 考查代词辨析。this这；that那；one一个；it它。根据“Sometimes…is very cool”可知，此处指天气凉爽，应填“it”代指天气。故选D。 38．________ is sunny. Let’s go mountain climbing. A．It B．That C．This D．They 【答案】A 【详解】句意：天气晴朗。我们去爬山吧。根据“…is sunny. Let’s go mountain climbing.”可知，此处需要用代词it来指代天气。故选A。 39．—_______ is the weather in Beijing? —_______ warm and sunny. A．What; It’s B．How; It’s C．How; It D．What; It 【答案】B 【详解】句意：——北京天气怎么样？——温暖而晴朗。 考查特殊疑问句。What什么；It’s它是；How如何；It它。询问天气可以用“How is the weather?”或“What is the weather like?”。此处用how，排除A、D；第二句缺少主语和谓语，主语是it，be动词用is。故选B。 40．—Who were you talking with on the phone just now? —________ was my brother. A．It B．He C．She D．Simon 【答案】A 【详解】句意：——刚才你在和谁通电话？——是我弟弟打来的。 考查代词辨析。It它；He他；She她；Simon西蒙。根据“Who were you talking with on the phone just now”可知，此处用人称代词it，指身份不明确的某一个人。故选A。 41．—Who ________ your English teacher, Tom? —________ Miss Green. A．is; It’s B．are; It’s C．is; He is D．are; Its 【答案】A 【详解】句意：——谁是你的英语老师，汤姆？——是格林小姐。 考查主谓一致及代词。第一句主语是your English teacher，be动词用is，第二句缺少主谓，此处指代“Miss Green”，用it is表示，故选A。 42．Linda, there is somebody knocking at the door. Go and see who ________ is. A．he B．she C．it D．this 【答案】C 【详解】句意：Linda，有人在敲门。去看看是谁。 考查代词辨析。he他；she她；it它；this 这个。根据“somebody knocking at the door”可知，当指代身份不明的人时，英语中习惯用it，故选C。 43．—Someone is knocking on the door. —________ must be Jim. He is here to give back my bike. A．He B．This C．It D．They 【答案】C 【详解】句意：——有人在敲门。——一定是吉姆，他是来还我自行车的。 考查代词辨析。He他；This这；It它；They他们。根据“Someone is knocking on the door.”可知，此处是指代不明身份的某个人，用it指代。故选C。 44．It’s hard for the students __________ a healthy diet. We should help them with it. A．have B．having C．has D．to have 【答案】D 【详解】句意：学生们的饮食结构很难健康。我们应该帮助他们。 考查非谓语动词。此处是结构it is adj. for sb. to do sth.“做某事对某人来说是……的”，it作形式主语，真正的主语是动词不定式。故选D。 45．It’s good for us to ________ a good habit of brushing teeth in the childhood. A．developing B．show C．develop D．showing 【答案】C 【详解】句意：从小养成刷牙的好习惯对我们有好处。 考查it的固定句型及动词辨析。developing逐渐养成，现在分词及动名词；show显示，动词原形；develop逐渐养成，动词原形；showing显示，现在分词及动名词。根据空后的“a good habit of brushing teeth”并结合选项可知，此处指养成刷牙的好习惯；分析句子结构可知，此处为固定句型“It’s+adj.+for sb. to do sth.”，意为“对某人来说，做某事是……的”。故选C。 46．________ is very honest of you ________ the money you found on the playground. A．That; to return B．This; returning C．It; to return D．It; returning 【答案】C 【详解】句意：你归还了在操场上捡到的钱，这非常诚实。 考查it作形式主语的固定句型。That那，指示代词；This这，指示代词；It作形式主语，无实际意义；to return归还，动词不定式；returning归还，动名词或现在分词形式。根据句子结构，此处应用“It is+adj. of sb. to do sth.”句型，其中it作形式主语，动词不定式“to return the money you found on the playground”作真正的主语，构成“It is+adj.+of sb.+to do sth.”句型，表示“某人做某事是……的”。故选C。 47．It’s easy ________ each other if we don’t communicate clearly. A．understand B．understanding C．to understand D．to misunderstand 【答案】D 【详解】句意：如果我们不清楚沟通，就很容易误解对方。 understand理解（动词原形）；understanding理解（动名词/现在分词）；to understand理解（不定式）；to misunderstand误解（不定式）。根据“if we don’t communicate clearly”（如果我们不清楚沟通）可知，不清楚沟通会导致理解错误，因此应用“误解”之意。“It’s +形容词+to do sth.”为固定句型，表示“做某事是……的”，it是形式主语，动词不定式是真正的主语，to misunderstand符合语境。 48．It ________ me half an hour ________ my homework every day. A．takes; to do B．takes; doing C．spends; doing D．spends; to do 【答案】A 【详解】句意：我每天做作业要花费半个小时。 本题考查固定句式it takes sb some time to do sth“做某事花费某人多少时间”，根据“every day”可知，本句时态为一般现在时，主语是it，第一空要填动词的第三人称单数形式takes，第二空要填不定式to do。spend“花费”的用法为sb spend time (in) doing sth，与句子成分不符。 49．We all thought ________ necessary for you to spend as much time as you could ________ English. A．that; improving B．it is; to improve C．it; improve D．it was; improving 【答案】D 【详解】句意：我们都认为你尽可能多地花时间提高英语是必要的。 考查it作形式宾语及固定搭配。第一空，根据“We all thought…necessary for you to…”可知，此处表示我们都认为你尽可能多地花时间提高英语是必要的，应用it作形式宾语，结构为“主语+动词+it+for sb. to do sth.”，真正的宾语是动词不定式，此处也可理解为thought (过去式) 后是省略了that的宾语从句，宾语从句的句子结构是“It+is/was+for sb. to do sth.”，主句是一般过去时，故宾语从句中be动词应用was；第二空，“spend time (in) doing sth.”为固定搭配，表示“花费时间做某事”。故选D。 50．Scientists made ________ possible to use robots to clean the rooms. A．it is B．that it C．it D．it’s 【答案】C 【详解】句意：科学家们让使用机器人打扫房间成为可能。 make it+adj.+to do sth.意为“使做某事变得……”，其中it作形式宾语，真正的宾语是后面的动词不定式。A、D项含有系动词is，B项含有that，填入后句子结构错误，所以应填it。 2 同步新教材，周周有练习，月月有重点！ 7 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $