月9日英語ppt課件

1、 The special usage of “It”! The special usage of “It”! 要點解讀要點解讀能力解讀能力解讀在正確運用在正確運用it的基礎用法上的基礎用法上,重點掌握重點掌握:作形式主語作形式主語作形式賓語作形式賓語引導強調(diào)句引導強調(diào)句并能在所給題干提示的語境和邏輯并能在所給題干提示的語境和邏輯關系中靈活運用關系中靈活運用.基本概念和用法基本概念和用法 It 是一個特殊的代詞，它有兩重意義。一是作是一個特殊的代詞，它有兩重意義。一是作為代詞，另一個是當作連接詞為代詞，另一個是當作連接詞(引導詞引導詞)。它可以用來代替事物和前面提到過的它可以用來代替事物和前面提

2、到過的事事,也可以用來表示時間也可以用來表示時間,天氣等天氣等.還可還可以用作先行代詞及引導詞以用作先行代詞及引導詞.Yeah. I wont forget it!It is a lovely and cute panda, isnt it?Is it a girl or a boy?3. 指代時間和天氣指代時間和天氣How is the weather?It is rainy.It is twenty past two.Whats the time now? 4. 指代距離指代距離How far is it from your home to your school?It is only f

3、ive minutes walk.5. 表示情況或代替表示情況或代替this, that:How is it going on with the girl? It must go on with her very well. She is very happy.Whats this ? It is a cute dog.1.指代人稱代詞指代人稱代詞(1)Wheres my book? Have you seen it? (2) The dog is in the garden, isnt it?(3) The baby is crying. It must be hungry. (4)-Som

4、eone is ringing. Whos it? -Its me. It 指代 動物It 指代不確定身份的人指代不確定身份的人 It 指代 某物 It 指代 嬰兒 (3)it表示時間、天氣、距離等。 -What time is it now? -Its half past three. It is hot and sunny. Its about ten kilometers from the park to the museum. 二二.用作先行代詞用作先行代詞:it作形式主語作形式主語: 英語中不定式、動名詞、主語從句在作主語時英語中不定式、動名詞、主語從句在作主語時主語往往顯得很長，使

5、整個句子看上去有點主語往往顯得很長，使整個句子看上去有點 頭頭重腳輕，這樣就借助重腳輕，這樣就借助“it來作形式上的主語，來作形式上的主語，而把真正的主語移到句子后邊去，使全句看上而把真正的主語移到句子后邊去，使全句看上去平穩(wěn)一些。去平穩(wěn)一些。 “it沒有實際的意義。沒有實際的意義。 It + predicate (be) + adj. / n. +to do It is easy to climb the hill. It is his duty to settle the problem. 2) It +predicate (be) + no use / good + gerund (動名

6、詞動名詞) It is no using arguing with him. It is no good going there. 2.作形式賓語作形式賓語: 這種情況通常只用于能帶以名詞或這種情況通常只用于能帶以名詞或形容詞作賓語補語的動詞后面。常用于形容詞作賓語補語的動詞后面。常用于下列句型下列句型:feel; think; make; find+it + adj. / n. +to do Eg. I found it not easy to get on with Jim. We all think it vital to English well.Mr. Li has made it

7、very clear that no one is allowed to go swimming alone after class. I leave it to you to judge by yourself.三三. 作為強調(diào)句的引導詞作為強調(diào)句的引導詞: 為了強調(diào)句子的某一成分，把引導詞為了強調(diào)句子的某一成分，把引導詞“it用在句首，這種強調(diào)句的結構是用在句首，這種強調(diào)句的結構是“It is （was ）所強調(diào)的成分主語、）所強調(diào)的成分主語、賓語、狀語）賓語、狀語）that”，表達的意思為表達的意思為“是是，正是，正是，就是，就是”?！癷t ”在這種句型中本身沒什么實際意義。在這種句型中

8、本身沒什么實際意義。這里需要說明的是：如被強調(diào)的是人，這里需要說明的是：如被強調(diào)的是人，則后面用則后面用who或或that， 如被強調(diào)的是物如被強調(diào)的是物或其他情況，則用或其他情況，則用that。 Peter swept the floor yesterday. (改為強調(diào)句) It was Peter who / that swept the floor yesterday.(主) It was yesterday that Peter swept the floor.(時間狀語) It was the floor that Peter swept yesterday.(賓語)*注意點注意點

9、:使用強調(diào)句應該注意的問題有下面幾點使用強調(diào)句應該注意的問題有下面幾點:無論被強調(diào)部分是什么無論被強調(diào)部分是什么,總是用總是用that (強強調(diào)指人的主語時調(diào)指人的主語時,who / that兩者皆可兩者皆可用用;如果被強調(diào)部分是指物只用如果被強調(diào)部分是指物只用that, ) It was they who / that built the house last year. 2) 強調(diào)主語時強調(diào)主語時,謂語動詞必須和原有的主謂語動詞必須和原有的主語保持人稱數(shù)的一致語保持人稱數(shù)的一致: It is he who is going to go abroad. It is I who am to b

10、lame. 3) 區(qū)別詞句與定語從句的異同區(qū)別詞句與定語從句的異同: It was in the factory that my father used to work.(強調(diào)強調(diào)) It was the factory where my father used to work. (定語從句定語從句)四四. It 特殊句型特殊句型:1.It + be +一段時間一段時間 + since 1主句為主句為It is ( has been) +時段時時段時 , since從句通常用一般過去時；主句為從句通常用一般過去時；主句為It was ( had been) +, since從句一般為過去完成時

11、。從句一般為過去完成時。 2當當since從句中為延續(xù)動詞時，表示從該動從句中為延續(xù)動詞時，表示從該動作結束時算起有多久。作結束時算起有多久。 自從我上次見到他已經(jīng)有兩年了。自從我上次見到他已經(jīng)有兩年了。 It is two years since I last saw him 我有五年不抽煙了。我有五年不抽煙了。 It has been five years since I smoked. It is three years since I was in the school. 我離開學校五年了。我離開學校五年了。 It is three years since I left the sch

12、ool 2. It + seem / appear + as if / that / since It + look + like / as if It seems as if there will be an election soon. It looks like rain. It looks as if there will be a mistake. It looks as if he were / is ill.。 It seems like years since I last saw you.3. It + be + done ( reported / said / told /

13、 announced / thought / believed / known) + that 據(jù)說他已經(jīng)出國學習了。據(jù)說他已經(jīng)出國學習了。It is said that he has studied abroad.=He is said to have studied abroad.大家都知道這座大橋要提前完工。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 time4. It + be + for / of sb. + to do sth. 如果不定式的邏輯主語是由如果不定式的邏輯主語是

14、由of引起，主句中的形容詞引起，主句中的形容詞必須是能表示主語特征的形容詞。常見的有：必須是能表示主語特征的形容詞。常見的有：bad; brave; careless; clever; foolish 等，這個句型可以改等，這個句型可以改寫為：寫為：sb. + be + adj. + to do. 如果不定式的邏輯主語如果不定式的邏輯主語是由是由for引起，主句中的形容詞通常是表示重要性，緊迫引起，主句中的形容詞通常是表示重要性，緊迫性，頻繁程度，難易度等情況的形容詞，常見的有：性，頻繁程度，難易度等情況的形容詞，常見的有：important, safe, common, difficult等

15、。等。 你這么說太好了。你這么說太好了。 Its kind of you to say so. 做這項工作對我來說很難。做這項工作對我來說很難。 Its difficult for me to do this work.5. It + be + n. + to doIts his duty to attend to the matter.6. It + be + no use / useless + doingIts no use trying to persuade him.7. It + be + n.( a pity / a shame / no wonder + that Its a

16、pity / shame that you are sick. Its a wonder that he is still alive.8. It is time to do something It is time to go to school. It is time for sb. to do something. It is time for me to do homework. It is time for something. It is time for class. It is high time that someone did something. It is high t

17、ime that we went to bed .一選擇填空一選擇填空 1.Have you seen my watch? Yes, _is on the desk.A. It B. thisC. it D. that 2. -I hear the Whites have a new baby. - Oh, is _ lovely?A. he B. she C. theyD. it 3.-There is a knock at the door. _? - It is me.Who is he B. Who is that C. Who is it D. Who is sheCCD4. -Wh

18、at 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; It B . it; Its C. It; It D. it; Its6. -Is that a pen or a pencil? - _ is a pencil.A. This B. ThatC. It D. TheyBBC 7. -What is the d

19、ate today, the 18th or the 19th? -Neither. _ the 20th. A. ItB. That C. This D. Its 8. I bought a knife and lent _ to him.A. itB. thatC. oneD. ones 9. -_ is very difficult to remember all their names. -I think so.A. ThatB. It C. ThisD. ItsDAB10. I found _very difficult to get to sleep last night.A. its B. itC. thats D. this11. _ was B