九年級(jí)級(jí)下Unit4 Natural disasters教學(xué) grammar課件

1、 The special usa of “It”! Unit4 Grammar要點(diǎn)解讀1.作人稱代詞和非人稱代詞的用法2. 作先行代詞用法3. 作引導(dǎo)詞的用法能力解讀在正確運(yùn)用it的基礎(chǔ)用法上,重點(diǎn)掌握:作形式主語(yǔ)作形式賓語(yǔ)并能在所給題干提示的語(yǔ)境和邏輯關(guān)系中靈活運(yùn)用.基本概念和用法 It 是一個(gè)特殊的代詞，它有兩重意義。一是作為代詞，另一個(gè)是當(dāng)作連接詞(引導(dǎo)詞)。它可以用來(lái)代替事物和前面提到過的事,也可以用來(lái)表示時(shí)間,天氣等.還可以用作先行代詞及引導(dǎo)次.具體用法作代詞:1. 指代事物或前面提到過的事物:What is this ?It is a picture.It is a lovely

2、and cute panda, isnt it?Yeah. I wont forget it!2. 指代時(shí)間和天氣How is the weather?It is rainy.Whats the time? It is twenty past two.3. 指代距離How far is it from your home to your school?It is only five minutes walk.4. 表示情況或代替this, that:How is it going on with the girl? It must go on with her very well. She i

3、s very happy.Whats this ? It is a cute dog. P55 A Answer these questions using it as the subject.Whats the weather like today?Whats the time now?What is the date today?What is the season now?How far is your home from school? P56 B Put the words in the correct order to make meaningful sentences.now/

4、for supper/ it/ time / isautumn/ in Australia/ now/ it/ isabout five kilometres/ it/ is/ to the parkwindy/ was/ it/ yesterdayIt is time for supper now.It is autumn in Australia now.It is about five kilometres to the park.It was windy yesterday.it作形式主語(yǔ)。英語(yǔ)中不定式、動(dòng)名詞、主語(yǔ)從句在作主語(yǔ)時(shí)主語(yǔ)往往顯得很長(zhǎng)，使整個(gè)句子看上去有點(diǎn) 頭重腳輕，這樣就

5、借助“it”來(lái)作形式上的主語(yǔ)，而把真正的主語(yǔ)移到句子后邊去，使全句看上去平穩(wěn)一些。 “it”沒有實(shí)際的意義。 It + be+ adj. / n. +to do It is easy to climb the hill.It is his duty to solve the problem.2) It + be + no use / good + gerund (動(dòng)名詞)做某事是沒用的。It is no using arguing with him.做某事是沒好處的。I t is no good going there. 2.作形式賓語(yǔ)。這種情況通常只用于能帶以名詞或形容詞作賓語(yǔ)補(bǔ)語(yǔ)的動(dòng)詞后面

6、。常用于下列句型:feel; think; make; find+it adj. / n. +to do E.g. I found it not easy to get on with Jim. We all think it important to learn English well.It 句型:1.It + is/was/ has been +一段時(shí)間 + since+過去時(shí)自從我上次見到他已經(jīng)有兩年了。 It is two years since I last saw him.我離開學(xué)校五年了。 It has been three years since I left the sch

7、ool.It 句型:2. It takes/took sb some time to do sth 花費(fèi)某人多少時(shí)間做某事他們花了3年時(shí)間蓋這棟大樓。 It took them 3 years to build the skyscraper.我用了三天讀完這本書。 it took me three days to finish reading the book.3. It + seems / appears that好像。 好像不久有選舉。 It seems that there will be an election soon. 看來(lái)要下雨了。 It appears that its goi

8、ng to rain. 4. It + be + done ( reported / said / told / known) + that 據(jù)報(bào)道、據(jù)說、據(jù)獲悉。 據(jù)說他已經(jīng)出國(guó)學(xué)習(xí)了。 It is said that he has studied abroad. 大家都知道這座大橋要提前完工。 It is well known that the bridge will be completed ahead of time. 1）It + be + for sb. + to do sth.做某事對(duì)于某人來(lái)說怎么樣 如果不定式的邏輯主語(yǔ)是由for引起，主句中的形容詞通常是表示重要性，緊迫性，頻

9、繁程度，難易度等情況的形容詞，常見的有：important, safe, common, difficult等。 做這項(xiàng)工作對(duì)我來(lái)說很難。 Its difficult for me to do this work.5. 2） It + be + of sb. + to do sth.某人做某事某人怎么樣 如果不定式的邏輯主語(yǔ)是由of引起，主句中的形容詞必須是能表示主語(yǔ)特征的形容詞。常見的有：bad; brave; careless; clever; foolish 等，這個(gè)句型可以改寫為：sb. + be + adj. + to do. 你這么說太好了。 Its kind of you to

10、say so.=You are kind to say so. C Write a sentence using it and a to-infinitive under each picture below.calm/stay/ fire/ importantIts important to stay calm in a fire.2. forest/ start/ fire/ dangerousIts dangerous to start fire in the forest.C Write a sentence using it and a to-infinitive under eac

11、h picture below.3. take/ umbrella/ good ideaIts a good idea to take an umbrella.4. have/ park/ picnic/ niceIts nice to have a picnic in a park.D Put the words in brackets in the correct order to complete the conversations.S1: Look at the sky. There are many dark clouds, and the wind is blowing stron

12、gly.S2: (it/ seems/a typhoon/ that/ coming/ is)2. S1: Is your father going to Beijing today?S2: No. (it/ appears/ has been cancelled/ the flight/ that)It seems that a typhoon is coming.It appears that the flight has been cancelled.D Put the words in brackets in the correct order to complete the conv

13、ersations.S1: Mary looks very sad.(it/ seems/ something bad/ her/ that/ has happened to)It seems that something bad has happened to her.一選擇填空( ) 1.Have you seen my watch? Yes, _is on the desk.A. ItB. thisC. itD. that( ) 2. -I hear the Whites have a new baby. - Oh, is _ lovely?A. heB. sheC. theyD. it

14、( ) 3. - There is a knock at the door. _? - It is me.A. Who is he B. Who is that C. Who is it D. Who is sheCCD一選擇填空( ) 4. What is the weather like today? _ is very hot, isnt it?A. it B. It C. Weather D. Its( ) 5. How far is _ from here to the railway station? _ about ten minutes walk.A. it; ItB . it

15、; Its C. It; It D. it; Its( ) 6. Is that a pen or a pencil? _ is a pencil.A. ThisB. ThatC. It D. TheyBBC( ) 7. What is the date today, the 18th or the 19th?Neither. _ the 20th. A. It B. That C. ThisD. Its( ) 8. I bought a knife and lent _ to him.A. it B. that C. oneD. ones( ) 9. _ is very difficult

16、to remember all their names.A. That B. It C. This D. ItsDAB( ) 10. I found _ very difficult to get to sleep last night.A. its B. it C. thats D. this( ) 11. _ was Bob _ I met in your room yesterday.It, whom B. That, who C. It, that D. This, who( ) 12. _ was in your room _ I met Bob yesterday.A. It, who B. It, that C. That, who D. That, that BCB二完成下列句子：1從深圳到廣州大約兩個(gè)小時(shí)的車程。 _ _ _ _ from Shenzhen to Guangzhou.2這里的氣候是冬暖夏涼。 _ _ in winter while hot _ _.3請(qǐng)