人教高中英语选修六 Unit3 A Healthy Life --it的用法课件（共39张）.ppt

1、Unit 3 A Healthy LifePeriod Three GrammarDiscovering“It”1.It is a beautiful day here.2.It seems amazing that at my age I am still fit enough to cycle 20 kilometers in an afternoon.3.It is my birthday in two weeks time and Ill be 82 years old.4.Your mother tells me that you stared smoking some time a

2、go and you are finding it difficult to give it up.1.5.I know how easy it is to begin smoking and how tough it is to stop.Learning Aims1.Learn and grasp the usage of“it”.2.Learn to use some important sentence structures with“it”in it.3.Improve your speaking and writing ability.The use of“it”考点思维导图it的

3、用法it用作代词it用作形式主语it用作形式宾语it用于强调句型it用于固定搭配和固定句型Read and analyze the sentences.It is Friday today.It was very cold last Monday.It is about 8:30 now.It is about 25km from Longxian to Bazi.It lies in the south of Shaoguan city.It is 40C!You got a high fever!Conclusion(一):it 可以用作非人称代词,表示_,_,_,_,_,_等。日期天气时

4、间距离地点温度It(them),one(ones),that(those)1.-There must be a dozen pens in the house but I can never find _ when I need _.-Keep looking._ is sure to turn up.A.one;one;One B.it;one;It B.C.one;it;This D.a one;one;The one 2.-Can I help you?-Id like to buy a present for my fathers birthday,_ at a proper pric

5、e,but of great use.A.that B.one C.any one D.the one 3.Maybe it is true that we do not know what we have got until we lose _.A.one B.that C.it D.the one 4.The environment in this faraway town is as pleasant as _ in the coastal city.A.one B.it C.them D.that 5.The best job is _ which uses your skill in

6、 doing something together with your interest in the subject.A.that B.the one C.one D.it 6.-What do you think of the furniture on exhibition?-Well,great!But I dont think much of _ you bought.A.the one B.it C.that D.which 7.A cake made of wheat costs less than _ made of rice.A.one B.that C.a one D.the

7、 one 8.As they are retired,they prefer to buy a house in the country to spend their late years to _ in a large city.A.one B.that C.the one D.it Translation1.It is important for you to read English every day.2.It is no use regretting.3.It is believed that all the students have done their best.4.观看足球比

8、赛非常的有趣。5.跟他吵架没有任何好处。6.众所周知，指南针是中国发明的。It 作形式主语1.It+be+adj./n+（for/of sb.）+to do sth.2.It+is+adj./n./pp.+that clause3.Its no good/use/great fun/worth/a waste of time/worthwhile doingIt is important that we should read English every day.It is suggested that you should have a rest on Sunday.It is said t

9、hat we will have a test at the end of this month.4.It is said/known/reported/believed/thought/suggested/ordered5.It seems/appears/looks/matters/happens/turn out/occurred to sb+that6.It is likely/possible/probable that.Exercise II Rewrite the following sentences using an“it”structure.1.Many people be

10、lieve smoking causes cancer.(It is believed）2.Dont try to quit on a stressful day.(Its no use)3.My father has quit smoking at last.(It is wonderful)4.You have to take pills to control your blood pressure.(It is necessary)5.You could suffer from bad health if you keep smoking.(It is likely).It is imp

11、ortant to know your limitations.知道自己的局限性是很重要的。It is a good idea to have a little notebook handy.手边有个小笔记本是个好主意。It gives me great pleasure to see the movie.观看电影让我很高兴。为他工作很有意思。你认为和他吵值得吗？It is great fun/worthwhile working for him.Do you think it is worthwhile quarrelling with him？1.It is said that Tom i

12、s a faithful worker.2.It is reported that the murderer has been arrested.3.It is believed that all the students have done their best.=Tom _ _ _ _ a faithful worker.is said to be=The murderer is reported to have been arrested.=All the students are believed to have done their best 5.在英国懂得英语是非常重要的.It s

13、eems very important that you know English in Britain.6.碰巧我看过这部电影It happens that I have seen this film.7.据说这位电影明星已经到了杭州。It is reported that the movie star has arrived in Hangzhou.=The movie star is reported to have arrived in Hangzhou.1.I found it very interesting to study English.I think it no use a

14、rguing with him.He made it clear that he was not interested in this subject.Summary:Sub+V+it+adj./n.+to do/doing/that clauseit用作形式宾语V:feel/find/make/think/believe/consider 2.like(love,dislike,hate,it+thatappreciate it if,depend on it that,take it for granted,keep it in mind,owe it to sb that See to

15、it that Exercise IIII hate when I have to speak in English on the phone.You can depend on that he will help us.He didnt make _ clear when and where the meeting would be held.A.thisB.thatC.itD.theseId appreciate _ if you would like to teach me how to use the computer.A.thatB.it C.this D.you1.It is/wa

16、s +被强调部分+that/who.I met Tom in the park yesterday.1)It was I who met Tom in the park yesterday.2)It was Tom who I met in the park yesterday.3)It was in the park that I met Tom yesterday.4)It was yesterday that I met Tom in the park.It was five oclock _I got home.It was at five oclock_ I got home.whe

17、nthatit用于强调句型2.Is/was+it+被强调部分+that/whoWhen will we have our holiday?Where did you go yesterday?When is it that we will have our holiday?Where was it that you went yesterday?3.特殊疑问词+一般疑问句语序4.宾语从句中的强调结构When is it that we will have our holiday?Where was it that you went yesterday?I dont know when it i

18、s that we will have our holiday.5.含有定语从句的强调结构It was in 1990 _she saw a skinny boy on a platform _she got the idea for Harry Potter.It was in the village _he once lived _he got his junior education.whenthatwherethat4.It was+not until+被强调部分+that.I didnt realize she was a famous film star until she too

19、k off her dark glasses.It was not until she took off her dark glasses that I realized she was a famous film star.=Not until she took off her dark glasses did I realize she was a famous film star.I didnt go home until the school was over.I didnt go to bed until 12 oclock.特殊用法1.it-that-one-the one-tho

20、seIt 指上文提到的同一个事物，that指同一类，代指可数或不可数名词，that=the+n.,one 也指同一类，代指可数名词，指代a/an+nExercise IFill in the blanks with it,one,the one,that,those.1.I havent a pen,can you lend me _?2.I like this house with a beautiful garden in front,but I dont have enough money to buy _.3.The vase on the left is more beautiful

21、 than _ on the right.4.The coffee produced in Brazil is more famous than _in Mexico.5.The windows of your flat are cleaner than _of mine.thatitthe oneonethose2.that-before-when-since1.It was(not)+时间+before(一般过去时)It will(not)be+时间+before(一般现在时)Eg.It was two hours before he finished his homework.It wi

22、ll be 10 days before we have a exam.2.It is/has been+时间+since It is three years since he joined the army.(1)It was three oclock _ he went out.(2)It was at three oclock _ he went out.thatwhenAADCExercise IV1.It was two years _he realized the truth.2.It will be two years _ the economic situation impro

23、ves.3.It was two years later _ he realized the truth.4.It is/has been two years _ he lived here.5.It was midnight _ he arrived home.6.It was at midnight _ he arrived home.7.It was not until midnight _ he arrived home.A.before B.when C.since D.thatBDD3.据说/据报道/众所周知的5种表达方式1It is said/reported/known+tha

24、tIt is known that the compass has been invented by China.2As is said,3People say that4sb./sth.Is said to do5What is said is thatIt is said that he is a student.It is reported that he has been to America.我是Bob，一个高二(13/16)班的学生。我家离学校有2公里，每天我花大约20分钟步行来学校。妈妈建议我骑自行车上学，但我却不这么想。对于我来说，步行是一件快乐的事。正是步行强壮了我的身体。为

25、了过健康的生活，我会继续步行。Translate the following.Try to use“it”as muchas possible.Im Bob,a student from Class1 Senior 2.It is 2km from my home to school and ittakes me about 20 minutes to come to school on foot every day.It is advised by my mother that I should ride a bike.But I dont think so.It is a pleasure

26、 for me to walk to school.It is walking that make me strong and fit.I will go on walking to live a healthy life.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。Observethink remember apply 这是一个阳光明媚的早晨。多罗茜赶紧从床上跳下来，打算去外面看看，托托跟在她的后面。当门打开时，多罗茜惊奇地发现：在一大片绿油油的草地上，生长着高大的树木，大树上结满了各种诱人的果实；披着美丽羽毛的鸟儿们在树枝间

27、翻飞、歌唱；草地的边缘有一个斜坡，斜坡上到处盛开五颜六色的鲜花。对于长期居住在干燥、灰蒙蒙的草原上的多罗茜来说，眼前的景象实在是太迷人了。正当她出神地望着这片奇异美丽的景色时，一群人向她走了过来。多罗茜看了看那群人，惊讶极了。Homework1.Finish exercise 2 on page 21:Rewrite the sentences.2.Revise and master the use of it.3.Preview the Reading:HIV/AIDS:Are you at risk?含有 it 的其它句型：1.It is time(for sb.)to do sth.2.

28、It is(high)time that sb.did sth.(虚拟语气)3.It is/has been+段 时间+since 从已多久了。It is five months since I arrived in New York.我到纽约已经五个月了。It is five months since I was in New York.我离开纽约已经五个月了。（注意：终止性动词表示从动作发生时算起；如果是状态动词或持续性动词，则从动作或状态结束时算起。）4.It was/will be+时间+before 这个句型中时间是时间段，如long、years、months、weeks、five

29、days、three hours、twenty minutes等。不过主句的时态多用一般将来时或一般过去时。“之后才”，“没过就”It will be several years before we meet again.我们要过好几年才能再见面。It was not long before they set out for the front.不久他们就出发去了前线。5.It is/was/the first/second/third time that It is the first time that I have been here.It was the second time tha

30、t he had seen the film.6.It is up to sb.to do sth 应由某人做某事。It is up to you to decide whether we start or not.7.It takes sb一段时间to do sth表示“做某事花费某人多长时间”。It took us half an hour to ride to the town by the sea8.it is+具体的时间.+when该句型中的when引导的是一个时间状语从句，主句中的it指时间，表语由具体的时间充当。常译为“当的时候，是”It was 11 oclock when h

31、e came back.六、It 常用的固定搭配1.make it（1）在口语当中相当于succeed，表示：成功、做到、说定、赶上、及时到达Its hard to make it to the top in show business.（2）在口语中相当于fix the date for，表示“约定好时间”Shall we meet next week？OK.We just make it next Saturday.2.take it/things easy相当于Dont worry or dont hurry.用来劝告别人，表示“不要慌，别担心，沉住气”Take it easy！He will do it well.3.It all depends/that all depends 在口语中，相当于it hasnt been decided yet，表示“那得看情况，还没有定下来”Are you going to the countryside for holiday？It/That all depends.4.Its up to sb.在口语中，相当于its decided by sb.表示“由决定，由负责，取决于”Shall we go out for dinner？Its up to you.