It的用法小结-课件.pptx

1、It的用法小结-课件C O N T E N T S01020304目录人称代词人称代词非人称代词非人称代词形式主语、形式宾语形式主语、形式宾语其他用法其他用法人称代词人称代词1.基本用法，指代无生命的或者动物“它”2.指代不知道性别的婴儿非人称代词非人称代词指指天气天气It was nearly midnight when she came back.It is a lovely day,isnt it?It is April First today.It is some 3000 kilometers from Beijing to Guangzhou.非人称代词It is three do

2、llars.形式主语、形式宾语形式主语、形式宾语It be+said (reported/believed/known/told/thought/hoped)+that 从句常译为据说（据报道）important(necessary，right，strange，natural.)that clear(obvious,true,possible，certain.)that从句 作形式主语，替代主语从句It is very clear that hes round and tall It is very clear that hes round and tall like a tree.like

3、a tree.It is necessary that he(should)remember It is necessary that he(should)remember these words.these words.It is said that he has come to Beijing.It is said that he has come to Beijing.suggested(advised/ordered/demanded/insisted/commanded.)that 从句.that后的从句要用虚拟语气（should+动词原形）should 可以省；常译为据建议；有命令

4、）It is suggested that the meeting(should)It is suggested that the meeting(should)be be put off.put off.其他用法其他用法1.It is time(about time、high time)that从句(虚拟语气动词用did/had done/should do)It is time that children went to bed.It is time you bought a new car.It is(high)time you made up your mind.2.It is the

5、 first(second.)time that从句(从句用现在完成时have done)It was the first(second.)time that从句(从句用过去完成时had done)常译为是第一（二）次。It is the first time I have been here.=This is the first time I have been here.3.It is no good/no use/useless doing sth.常译为“有好处或没有用”It is no good learning English without speaking English.It

6、s useless trying to argue with Shylock.It is kind(of sb.)to do sth.It It is necessary is necessary (for sb.)to do sth.for sb.)to do sth.不定式的逻辑主语是由of引起，主句中的形容词必须是能表示逻辑主语特征的褒义或贬义形容词。常见的词有：bad,brave，careless，clever，cruel，foolish，good（好心的），honest，horrible，kind，lazy，modest，naughty，nice（有教养的），polite，rude，

7、silly，stupid，wise，wrong（错误的）等。这个句型可以改写为：sb.is kind to do sth.如:It is kind of you to say so.=You are kind to say so.不定式的逻辑主语是由for引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的中性形容词。常见的形容词有：important，necessary，natural easy，safe，common，normal，hard，difficult，dangerous，unusual，rare，impossible，pleasant 如:It is imp

8、ortant for her to come to the party.=It is important that she(should)come to the party.It took thousands of people many years to build the Great Wall.作形式主语替代不定式作形式主语替代动名词短语It is no good/no use/useless doing sth.常译为“有好处或没有用”It is no good learning English without speaking English.Its useless trying to

9、 argue with Shylock.作形式宾语该句型中的it 作形式宾语，该结构中常用的动词有：think,believe,make,find,consider,feel如We think it our duty to clean our classroom every day.He felt it important learning English well.They found it difficult that they would finish their work in two days.The Internet makes it easier for companies to

10、 keep in touch with customers.重要句型重要句型1.强调句型It is/was 被强调部分+that 从句(被强调的主语如果是人，that可以由who换用)It is not until+被强调部分+that.It was they that(who)cleaned the classroom yesterday.It was not until she took off her dark glasses that I realized she was a famous film star.重要句型巩固提升巩固提升单句改错1.It took us over an hour walk along the street.2.I think it a great honour to invite visit your country.3.Many people now make that a rule to buy cards for their friends before Christmas.4.What is very clear to everyone that hes round and tall like a tree.巩固提升THANKSTHANKS