Unit 6Sunshine for all第 3 课时 Grammar（学生版）-八年级英语下册同步精品讲义（牛津译林版）.docx

Unit 6 Sunshine for all 第3课时 grammar八年级英语下册同步精品讲义（牛津译林版）知识精讲1、It isadjto-infinitive（It is形容词十动词不定式） It isadj.forto-infinitive1) It isadjto-infinitive（It is形容词十动词不定式）“It is形容词动词不定式”可以用来描述行为和情境。在该句型中，it是形式主语，真正的主语是后面的动词不定式。把真正的主语放在句末而用it作形式主语也是为了句子的协调，避免“头重脚轻”。该句型中的形容词是用来描述行为或情境的。如：It is dangerous to play football in the street在街上踢足球是危险的。It is hard to understand what he said.要理解他的话是很难的。典型例题 完成下列句子 在下午五点钟之前完成这项工作是不可能的。_. 2) It isadj.forto-infinitive“It is形容词for动词不定式”可以用来具体说明正在谈论的事情。在该句型中，it是形式主语，for后面所引导的人或物是动词不定式的逻辑主语，for sb./sth. to do sth.在英语中通常称为动词不定式的复合结构。其中的形容词用来说明不定式的特征，而不是说明人的特征或性格。用于该句型的常见形容词有：hard，difficult，easy，important, interesting, dangerous, possible, 'impossible, meaningful, comfortable, uncomfortable等。如：It's difficult for you to pass the exam.对你来说通过这次考试是困难的。典型例题他们有必要乘出租车。_ _ necessary_ _ to take a taxi.2. It isadjof(not) to do sth（It is形容词of动词不定式）“It is形容词of动词不定式”结构用来对某人的品质、性格等作出评价，其中的形容词必须是表示人的品质、性格等的形容词。it是形式主语，没有实际意义。该结构中的sb.和(not) to do sth.有着逻辑上的主谓关系，所以该句型又可以转换成“sb.beadj.(not) to do sth.”。用于该句型的常见形容词有：careless，careful，clever, foolish, good, kind, nice, polite, impolite, rude, selfish, generous, wise, silly, modest, proud, thoughtful等。如： It's very nice of you to give me a gift. =You are very nice to give me a gift.你送给我礼物，你真好。It is silly of you not to forgive others for their mistakes. =You are silly not to forgive others for their mistakes.你不原谅别人的错误是愚蠢的。典型例题用of或for填空It's impossible _you to finish the work in such a short time.It's selfish _your cousin to eat up the whole cake.3. donate . to . 捐给【例句】donate money to charities 给慈善机构捐钱 donate blood to people in need给有需要的人献血典型例题你把这些衣服捐给希望工程真善良。_.4. experience 经验，经历【考点聚焦】表示经验时是不可数名词，表示经历时是可数名词。【例句】The greatest teacher is experience. 经验是最好的老师。 Please tell us your experiences in America. 请你告诉我们你在美洲的经历。【拓展】experience还可以做动词用，意为“经历”如：The more you experience, the more knowledge you will get.典型例题Please tell me something about your_（经历）in Beijing.5. have trouble (in) doing sth.做某事有麻烦【例句】Do you have trouble in learning English? 你在英语上有困难吗? 【拓展】have trouble (in) doing sth.=have trouble with sth.另外have trouble (in) doing sth.结构中，trouble还可以换成“difficulty, problems”典型例题 ( ) He has trouble_ it to you.A. read B. reading C. to read D. to reading能力拓展一、 完成句子1对于我们来说，出门戴口罩太重要了。_ _ for us _ _ a mask when we go out.2对于我们来说，依靠我们自己很重要。_ very important for us _ ourselves.3保护环境并不太难。Its not too hard to _ the environment.4拿别人开玩笑是不礼貌的。It is impolite _ _ _ _ others.5和这些特殊的人们密切合作真是令人惊奇的经历。Its an amazing experience to _ _ with these special people.分层提分题组A 能力提升练6Its not easy for me _ friends.AmakeBto makeCmakesDmade7Alex, are you getting on well with your new neighbor?No, he is always giving me a lot of _.AsuccessBspiritCtroubleDtraining8It is impossible _ how large the universe is.Ato imagineBimaginingCimagineDimagined9His words made _ possible for me _ in the city.Ait；to workBit；to workingCthat；to work10It is careless _ you to lose your mobile phone again. I think it necessary _ you to be more careful next time.Aof; ofBof; forCfor; forDfor; of11 It is careless _ you to lose your workbook again. Sorry, mom. I think its necessary _ me to be more careful next time.Aof; ofBof; forCfor; forDfor; of12Tom, your mobile phone is ringing.Wait a minute. Its dangerous _ us _ it while driving.Afor, answeringBof, to answerCfor, to answerDof, answering13Its important _ the government _ basic education for children in poor areas.Aof; to provideBof; provideCfor; to provideDfor; to providing14I think _ necessary for you _ breakfast.Athis; haveBits; to haveCits; have15Its good _ your health _.Afor, to drink milkBfor, drink milkCof, drink milkDof, to drink milk16_ is a good habit _ us to eat an apple every day.AIt, forBThat, forCThis, ofDIt, of17It is very important _ us _ English well.Afor; learnBof; learnCfor; to learn18Its good _ by _ the Internet, but dont spend too much time on it.Arelax; usingBto relax; usingCrelax; to useDto relax; to use19Its kind _ him to help me with my study.Yes, he is always kind _ everyone.Afor, ofBof, toCto, ofDto, to20_ is important _ us to do morning exercises every day.AThat; forBIt; forCThis; forDIt; of题组B 培优拔尖练21Its _ for teenagers to learn how to do cooking because its helpful.AimpossibleBnormalCnecessaryDmeaningless22Look out! The traffic is moving fast. It is _ dangerous _ cross the street.Avery, toBso, thatCmuch, toDtoo, to23Its strange _ Mary _ such a decision.Afor; makingBfor; to makeCof; makeDof; to make24Its _ that we should ask for her advice.AnecessaryBpopularCkindDhard25It is very important _ the work on time.AfinishBfinishedCto finishDfinishes26Its _ for us _ get to school on time. Which of the following choices is wrong?Ainteresting; toBimportant; toCgood; toDnecessary; to27It is important for students _ sports every morning.AplaysBplayingCto playDplayed28Its a good way _ English by _ English movies.Ato learn; to watchBlearning; watchingCto learn; watchingDlearning; to watch29Its good _ your health _ milk.Afor; to drinkBof ; drinkCfor ; drinking30Its necessary _ a foreign language.AlearnBlearnsCto learnDlearning