1、Grammarit作人称代词作人称代词1.The frog is not a warm-blooded animal.Its a cold-blooded one.1.用于指刚提到的事物，以避免重复。用于指刚提到的事物，以避免重复。2 My pen is missing.I cant find _.3 The adolescent is gaining weight,and _ worries his parents.4.-Sorry,sir.There is only one blue tie available.Take _?-No,thanks.I prefer a black _.it
2、itwhichitone2.用于指代人用于指代人 2)2)指代说话者不太清楚的那个人，常用在打指代说话者不太清楚的那个人，常用在打电话和敲门时。电话和敲门时。e.g.Who is knocking at the door？_is me.1)1)性别不明时性别不明时Look at the poor baby._is crying again.ItIt3.代替指示代词代替指示代词that,this Whose pill is this？_is mine.Whos that over there?_Helen.ItIts4.4.用来表示时间、天气、距离、自然环境，用来表示时间、天气、距离、自然环境，
3、地点、温度；抽象的环境地点、温度；抽象的环境.1)Its half past five now.2)Its getting freezing cold.3)Its 10 minutes drive to the post office?4)It was very quiet at the moment.5)How is it getting along?(time)(weather)(distance)(environment)(situation)人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）it作形式主语、形式宾语作形式主语、形
4、式宾语人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）1.做形式主语做形式主语 1)不定式不定式 It+be+adj.+for(of)sb.+to do；It is important for you to learn English well.Its generous of you to donate such a large amount of money to charity.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）It+be+名词名词+to doe.g.It
5、is a good idea to quit smoking before one becomes pregnant.没有见到那位学者本人真可惜！没有见到那位学者本人真可惜！It is a pity/shame not to see that scholar in the flesh.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）be+介词短语；介词短语；It is against the law to sell cigarettes to adolescents in Britain.其他类型的谓语其他类型的谓语It gives
6、me great pleasure to see a movie.It takes careful preparations to pass a job interview.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）2)动名词动名词 It be+no good/no use/useless/worth/fun/a waste of +doing It is much fun working for Google.In the opinion of many teachers,it is a waste of time playi
7、ng computer games.It is no use crying over spilt milk.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）3)主语从句主语从句a It+be+adj.+thatIt is certain that everything will work out successfully due to our hard work.It is strange that he should not feel ashamed of his behavior.It is strange/surprising/
8、important/necessary,+that+S+should+do人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）b It+is+n.+thate.g.It is a pity/shame that he should get into the habit of abusing alcohol._ that you are breathless;you have been walking for hours.It is no wonder人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar
9、（共34张PPT）c It+is+said/reported/believed/known to sb thate.g.It is said that the book has been translated into several languages.It+is+suggested/ordered/required/insisted that S+(should)+doIt is suggested that the students(should)build up their strength.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共
10、34张PPT）也可能是也可能是wh-词引导的词引导的It is still a question how many people are to come to the meeting.It is none of your business where I will spend this summer holiday.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）It remains to be seen whether it will do the environment harm or good.对环境有好处还是有害处对环境有好处
11、还是有害处,还要等着瞧。还要等着瞧。It(so)happens that.It seems/appears that It happened that my grandad went out when the fire broke out.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）1)1)当复合宾语中的宾语是不定式、动名词、宾语从句时当复合宾语中的宾语是不定式、动名词、宾语从句时,用用it it 作形式宾语作形式宾语,将真正的宾语放在宾语补足语之后将真正的宾语放在宾语补足语之后 S+S+make/make/think/belie
12、ve/find/consider/feel think/believe/find/consider/feel+it+adj./n.+to do/doing/that+it+adj./n.+to do/doing/that.He considers it his duty to help those at risk.I think it no use arguing with him.作形式宾语。作形式宾语。人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）The school has made it clear over and ove
13、r again that smoking is banned in the school.人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）2)like/love/enjoy/prefer/dislike/hate/appreciate+it+that/when/if从句从句 I dont like _ when one speaks with his mouth full.要是准许我加入校足球队，我将不胜感激。要是准许我加入校足球队，我将不胜感激。(admit)I would appreciate it if I were admit
14、ted to the school football team.it人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）I hate _you speak when your mouth is full.3)depend on it that rely on it that see to it that(make sure that)take it for granted thatDont take it for granted that famous brands mean high quality.it that人教版选修6unit3
15、grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）1.You can _(相信）相信）he will come here on time.2.Can you _(保证）保证）the door is locked when you leave?3._(我将不胜感激）我将不胜感激）if you could share your umbrella with me.4.Dont _ all those who get good grades in the examination will prove too be the most successful.depend
16、 on it thatsee to it thatI would appreciate ittake it for granted that人教版选修6unit3grammar（共34张PPT）人教版选修6unit3grammar（共34张PPT）It用于强调句型中用于强调句型中 1)“It is/was+被强调部分被强调部分+that+句子的其他部分句子的其他部分”。如果强调的是如果强调的是人人,可以用可以用who,whom代替代替that。Tom risked losing his life to save a drowning child last year.It was Tom tha
17、t risked losing his life to save a drowning child last yearwhoIt is I _ singing in the garden.that am Was it Tom that risked losing his life to save a drowning child last year2)Is/was it+2)Is/was it+被强调部分被强调部分+that+thatWho was it that risked losing his life to save a drowning child last year.3)3)疑问词
18、疑问词+is/was+it+that+is/was+it+that注意：注意：Can you tell me _ risked losing his life to save a drowning child last year?who it was thatHis health didnt improve until he quitted smoking.It was not until he quitted smoking that his health improved.Not until he quitted smoking did his health improve.4)It wa
19、s not until4)It was not until thatthat 1.我是在街上遇见她的父亲的。我是在街上遇见她的父亲的。(强调在街上强调在街上)2.你是你是8点开始工作的吗？（强调时间）点开始工作的吗？（强调时间）3.他为什么不能回答这个问题？他为什么不能回答这个问题？4.我把手提包落在了我们先前吃晚饭的餐馆里了我把手提包落在了我们先前吃晚饭的餐馆里了It was in the street that I met her father.Was it at eight oclock that you began to work?It was in the restaurant wh
20、ere we had had supper that I left my handbag.Why was it that he couldnt answer the question？It用于固定的句型或短语中用于固定的句型或短语中 It is time that you _a judgement about it.1)It is(high/about)time that+1)It is(high/about)time that+主语主语+did/should+do+did/should+doIt is the first time that he_ such an important mat
21、ter.2)It is the first/second2)It is the first/secondtime that+time that+主语主语+has done+has donemadehas decided on It is two years _ he got into the habit of smoking.3)It is/has been+3)It is/has been+一段时间一段时间+since+since+主语主语+did+didIt will not be long _the new measure takes effect.It was two weeks _h
22、e ran out of money.4)It will be/was+4)It will be/was+一段时间一段时间+before+before+主语主语+does/did+does/didsincebeforebeforeIt was nearly 12 oclock _he came back last night.5)It was+5)It was+时间点时间点+when+when 注意注意:It was at 12 oclock _he came back last nightwhenthatmake it 及时赶到及时赶到;成功成功;办成办成 e.g.You can make
23、it to the cinema if you hurry.如果你赶快还可以及时赶到电影院。如果你赶快还可以及时赶到电影院。You neednt worry;he will make it.你不必担心你不必担心,他会办到的。他会办到的。Could we make it next Monday?(约定时间）约定时间）视情况而定视情况而定It/that(all)depends.不紧张；放轻松点不紧张；放轻松点Take it/things easy.我无能为力；控制不了自己我无能为力；控制不了自己I cant help it.这就对了这就对了Thats it.由某人决定，负责由某人决定，负责Its up to sb.Just as our teacher often puts it,diligence makes up for intelligence.uHow is it with your study?学习好吗？学习好吗？uWe must fight it out/stick it out/stick to it.我们必须坚持到底。我们必须坚持到底。u-Look out for the steps.They are slippery.u-(I)Got it.
