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1、GrammarGrammarThe use of “it”How much do you know about “it”?The Use of “it”代词 it引导词 itIt句型归纳 Sentences With “it”1. 做人称代词，代替前文提到过的事物。代词 itYou body becomes accustomed to having nicotine in it.2. 用以代替指示代词this, that。 - Whose text-book is that? - Its hers. - Whats this? - Its a flag.As you know, if you
2、do the same thing over and over again, you begin to do it automatically.3. 用以代替未知的人或婴儿。Someone is knocking at the door. Go and see who it is.your bodythe thing4. 做非人称代词，指代时间、天气、距离 、环境、季节、日期、价值等。 Its time for class.It is summer now and it gets hotter and hotter.Its about two kilometers from here to m
3、y home.It is very quiet in our classroom every night. 代词 it-Whats the date today? -Its May 15, 2013. -Whats the cost of the T-shirt? -It is 150 yuan.时间天气距离环境季节日期价值It was a sunny day. Peter decided to go for a walk to the park even though it was 2 miles away. He was just about to leave the house when
4、 someone knocked at the door. “Who is it?”,he thought. When he opened the door, he found nobody but a note on the ground. He picked it up and read. It is surprising that the note should have been given to his neighbour. the use of it 天气距离未知的人形式主语note2、It is no good smoking.3、It is am amazing that at
5、 my age I am still fit.真正主语真正主语形式主语形式主语真正主语形式主语= To walk on the street was so comfortable. = Smoking is no good.= That at my age I am still fit is amazing.1、It was so comfortable to walk on the street.引导词 itSummary： it作形式主语，代替由不定式（或不 定式复合结构）、动名词或从句表示的真正主语。此处adj. 通常为描述人的形容词：kind; rude; silly， careful
6、; careless; foolish; stupid; clever; wise.Its kind of you to help me with the problem. （1）It is+ adj.+（for sb.）to do sth.此处adj. 通常为描述事件的形容词：easy; hard; difficult; necessary; likely; impossible; important; useful; dangerousIt is important for a teenager to learn English well（2）It is + adj. + （of sb.）
7、 to do sth.= to learn English well is important to for a teenager= You are kind to help me with the problem.e.g. It is fun to go out for a walk. （3）It is + 名词 + to do sth.常用的名词有：fun; pity, shame, pleasure.不可数名词It is a shame to be late for class It is a pleasure to have the chance to help you.(5) Its
8、 no good/use doinge.g. Its no use crying over spilt milk.(4) It takes Sb. some time to do. e.g. It took me 3 days to prepare this lesson.常见的adj.有:possible;clear;obvious;true,etcIt is very clear that he grows like a tree. (1) It is + adj. + that 从句(3) It is + v-ed + that 从句It is said (reported/believ
9、ed/ thought/known/ told/ suggested.) that . 译为“据说（据报道，据悉）” 。It is said that he has gone to Beijing.It is reported that Chairman Xi will visit Hangzhou. (4) It happens/ seems/appears+ that 从句 It seems that there is no way out of our difficulty.(2) It is + n. + that 从句常见的n.有:a shame; a pity, a fact,et
10、cIt is a pity that you missed the football match. 作形式宾语，代替由不定式、动名词或从 句表示的真正宾语。He feels it his duty to help others. We thought it no use doing that.引导词 - itHe made it clear that he was not interested in this subject. 他非常清楚地表示他对那门学科不感兴趣。注意：常用的动词有think, believe, make, find, consider, feel等。 在动词apprecia
11、te, dislike,hate，like, love等 后面代替if或when等引导的从句。I would appreciate it if you can come.it 代替if引导的宾语 从句。1.Giving up smoking is difficult.It is 1.2. Some young people think they look attractive when they smoke.It seems 3. Most people believe smoking causes cancer.It is believed 4.Dont try to quit on a s
12、tressful day.It is no use that smoking causes cancerthat some young people think they look attractive when they smoke.difficult to give up smoking.trying to quit on a stressful day.1、用it句型改写句子，意思不变。5. China produces one third of the worlds cigarettes. It is astonishing 6. You are not allowed to adve
13、rtise cigarettes in this country.It is illegal 7. My father has quit smoking at last.It is wonderful 8. The night was dark and stormy when the old man started his journey. It was a 9.You could suffer from bad health if you keep smoking.It is likely 10.You have to take pills to control your blood pre
14、ssure.It is necessarythat China produces one third of the worlds cigarettes.to advertise cigarettes in this country.that my father has quit smoking at last.dark and stormy night when the old man .that you could suffer from bad health if .for you to take pills to control your .2、用it句型把A句转换为B句，意思不变 。
15、1. A.To keep order in an important football match is a hard job for the police.B_ _ _ _ _ for the police to keep order in an important football match. 2A.To recite the passages in New Concept English is an effective way in English study.B. _ _ _ _ _ in English study to recite the passages in New Con
16、cept English.It is a hard jobIt is an effective way3. A.I meant that you might go without me, but I didnt make that clear.B.I didnt _ _ _ that you might go without me.4A. Memorizing 20 English words a day is easy for me.B.I find _ _ _ _20 English words a day.make it clearit easy to memorize5A.Who will take us to visit the nature park hasnt been decided yet.B._ _ _ _ _ wh
