高二英语It的用法公开课ppt课件.pptx

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1、,1.很明显，这项工作很适合Tom。,2. 据报道，几天前清远下雪了。,3. 正是这个学者和我们交流了他的想法。,4. 我们都承认今天很冷。,5. 我认为在公共场合犯这样一个错误是令人尴尬的。,It is evident that the job is appropriate for Tom.,It is reported that it snowed in Qing yuan several days ago.,It was the scholar that /who exchanged his ideas with us.,We all admit that it is very cold

2、 today.,I think it embarrassing to make such a mistake in public.,Grammar,The use of “it”（1）,it,做形式主语和宾语,强调句,含有it的句型,上文提到的事物,表示时间，天气， 距离，环境等,指动物、婴儿和未确定身份的人,It is + adj. +that,It is +adj. +(of/for sb.）to do sth.,It +be + -ed + that,It +be +n. + that,It is /was +被强调部分 +that +其他,eg. It is (high) time t

3、hat.,指代,sb. thinkit +n./adj. to do/ that clause,01,02,03,04,代替上文提到的人和物,指代婴儿、小孩或不知性别的人,用 it替代 this /that,泛指 （天气，距离，时间， 季节等）,Who is the boy? It is my son.Pass me your pen. Here it is.,The baby is crying. It might be hungry.Someone is ringing. Who might it be?,What is this? It is a book.,It is getting

4、colder and colder.It is a long way to Beijing.,考考你,What is “it” used to talk about?,一、指代,It 作形式主语，作真正主语的是_,_,_,It is no good eating too much before sleeping at night.,It is obvious that he is addicted to playing mobile games .,It is necessary to appeal to more people to participate in the activity.,

5、to do,doing,a clause,二、It 作形式主语,it做形式主语,It is + adj. +that,It is +adj. +(of/for sb.）to do sth.,It +be + -ed + that,It +be +n. + that,二、It 作形式主语,1. It is + adj. +that,可用于此句型的形容词有：_等。,It is obvious that he is addicted to ( playing ) computer games .,很明显，他对电脑游戏上瘾了。,important, necessary, surprising, pos

6、sible, obvious,2. It is +adj. +(of/for sb.）to do sth.,形容词表示事物的特点时，如：difficult, important, easy, impossible, necessary, hard等，用for.,你收养这个无家可归的孩子，真是太好了！,戒烟对他来说是很难的。,It is very hard for him to quit smoking.,It is kind of you to adopt the homeless child.,形容词表人的性格特征时，如：nice, good, kind, rude, brave, care

7、ful等，用of。,3. It +be + -ed + that,适用于该句型的过去分词有：（1）said, reported, hoped, thought, believed, predicted等。,It is hoped that you can make great progress in the coming final exam.,希望你们能在即将到来的期末考试中取得巨大进步。,It is said that he succeeded in passing the interview.,3. It +be + -ed + that,(2)适用于该句型的过去分词有：,It is r

8、equired that every participant （should）arrive at the lecture hall on time.,建议你不要冒险逗弄那只小狗。,It is suggested that you (should) not risk teasing the dog.,ordered/demanded/insisted/.,4. It +be +n. + that,适用于该句型的名词有：,It is a pity that you missed the sports meeting last week.,It is an honor that I was appo

9、inted as librarian in our school.,我被任命为我们学校的图书馆馆长，这是一种荣幸。,a pity, an honor, a surprise, ones duty等。,5. It is + n. + doing sth.,no good, no use, a waste of time.,适用于该句型的名词有：,It is no use complaining once you lose the chance.,一旦你失去这次机会，抱怨是没有用的。,Practice,1.Is _ necessary to complete the design before N

10、ew Years Day？2. _ is no good _ (talk)without doing anything.3. Does _ matter if he cant finish the job on time?4. I was disappointed with the film. I had expected _ to be much better.5. _is a fact that English is being accepted as aninternational language.6. _ is reported in the newspaper, talks bet

11、ween the two countries are making progress.,It is reported in the newspaper that talks.,it,It,talking,it,it,It,As,形式宾语,2) I think it no use crying over spilt milk.,3) I have made it clear that students are banned from bringing cellphones to school.,1) I find it easier to say than to do.,it 作形式宾语，真正的

12、宾语是_, _, _.,that clause,to do,doing,主语+ think+ it+_或_+_ _ _.,consider,find,make,believe.,n.,adj.,that-clause,v-ing,to do sth.,I think it best that you should do more exercise.He found it difficult to accustom himself to getting up early.She thought it no use arguing with the man.We made it a rule th

13、at the office should be cleaned by turns.,Practice,1.We make _ a rule that you must be quiet when you enter the classroom at 6:15 p.m.2. I think it necessary _ (have) a better understanding of the use of it.3.Finally he found it a waste of time _(play) computer games for a long time at weekend.4. I

14、would appreciate _if you could take my application into consideration.,it,to have,playing,it,1.我认为积极参加小组活动是我的责任。,I think it my duty to take an active part in the group activity.,2.这个化学家发现用这个方法解决这个问题是没有用的。,The chemist found it no use solving the problem in this way.,3. 我相信你在学期末实现目标是可能的。,I believe it

15、possible that you can achieve your goal at the end of the term.,今天是十二月二十一号。正是在一个月后我们将举行期末考试。我们都认为取得好成绩对我们来说是很重要的，因为我们都想过一个开心的寒假。据说我们将迎来最长的寒假，这个消息使每个人都很激动。希望每个人都能取得更大的进步。,Group Work,Today it is December 21st. It is in a month that we will take the final exam. We all think it important for us to get g

16、ood marks, because all of us want to enjoy a happy winter vacation. It is said that we will have the longest winter vacation , which makes everyone excited. It is hoped that everybody can make greater progress .,I,Mary,in the street,yesterday,It was I that/who met Mary in the street yesterday.,It wa

17、s Mary that I met in the street yesterday.,It was in the street that I met Mary yesterday.,It was yesterday that I met Mary in the street.,强调句,结构：,It is/was + 被强调部分 +that /who +句子其他成分,I met Mary in the street yesterday.,1. 被强调的部分不能为谓语动词. 3. 强调的部分是人 也可用who,其它一律用that.,He didnt realize the importance o

18、f health until he fell ill.,直到生病了，他才意识到健康的重要性。,It was not until he fell ill that he realized the importance of health.,Not until he fell ill did he realize the importance of health.,Inversion,It is not until that,直到考试不及格，Tom才下定决心努力学习。（强调句）,It was _that _.,not until he failed in the exam,Tom made up

19、his mind to study hard,1.It was yesterday _ Mr. Peng encouraged us to make good preparations for the final exam.2. It was because he paid little attention to his English study _ he didnt get a good mark in the mid-term exam.3. It was Wang Ruowei _ set a good example for us in study. 4. It was playin

20、g computer games_ cost the boy plenty of time_ he ought to have spent doing his lessons.,that/who,that,that,that,when,Its difficult to give up smoking.,2.Most people believe that smoking causes cancer .,3.Trying to make him give up smoking is no use.,1.Giving up smoking is difficult.,It is believed that smoking causes cancer.,It is no use trying to make him give up smoking.,Rewrite the sentence by using “it”,口诀：代词 it 本意它, 既可指这又指那;时间天气均可指, 谈到距离也用它; 假主假宾均可做, 强调句型跟that。,Summary,