高三表語從句講解(共5頁)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上表語從句講解一定義：    表語從句就是用一個句子作為表語。位于系動詞之后，說明主語身份，特征，屬性或狀態(tài)。比較：The problem ispuzzling.主語     連系動詞   形容詞作表語The problem is when we can get a pay rise.主語連系動詞 一個句子作表語-表語從句結(jié)構(gòu)：主句+系動詞+表語從句二、系動詞的分類（了解哪些詞為系動詞） 系動詞有表示狀態(tài)的；有表示狀態(tài)變化的。   表示狀態(tài)的有：1） be, seem ,

2、appear 等。2） look ,sound ,feel ,taste ,smell 等，由感官動詞變化而來。意思“看（聽、摸、嘗、聞）起來”。Mr. Li looks quite young. 李先生看起來很年輕。3） stand ,keep ,prove ,remain 等由不及物動詞轉(zhuǎn)化而來。The machine has been standing idle. 這臺機器一直閑著不用。2.表示狀態(tài)變化的：become ,get ,grow, fall, turn等 He has fallen ill. 他已經(jīng)病倒了。 三  連接表語從句與主句的關(guān)系詞主要有

3、三類：1. 從屬連詞：that（無有詞義，不可省略）, whether是否 ,if （不能引導(dǎo)表語從句）2.  關(guān)系代詞：who（主格）whom（賓格）,whose（所有格 what（什么）,which（哪個，哪些）3.  關(guān)系副詞：when（什么時候） where（什么地方）why（為什么）, how（怎樣）例如：The fact is that we have lost the game. 事實是我們已經(jīng)輸了這場比賽。Thats just what I want. 這正是我想要的。This is where our problem lies

4、. 這就是我們的問題所在。That is why he didnt come to the meeting. 那就是他為什么不到會的原因。It looks as if it is going to rain. 看上去天要下雨了。It is because you eat too much那是因為你吃得太多了。The reason why he was late was that he missed the train by one minute this morning （當(dāng)主語是reason時，表語從句要用that引導(dǎo)而不是because）另外，與其他名詞從句有所不同的是as, as

5、0;if/though, because 也可用來引導(dǎo)表語從句.如： He looked just as he had looked ten years before. 他看起來還與十年前一樣。She seems as if she had done a great thing. 她看起來好像做了一件大事。It is because you eat too much. 那是因為你吃得太多了?！咀⒁狻縝ecause 可引導(dǎo)表語從

6、句，但與之同義的since, as, for等也不用于引導(dǎo)表語從句。  四 注意事項（重點看） 1.  表語從句要用陳述語序。如：     That is where the famous scientist was born.     This is why she is so happy today 2.  that和what在引導(dǎo)的表語從句     That本身沒有詞義，在句中只起連接作用，不充當(dāng)句子成分；&#

7、160;    what則表示“所的（人或事）”，在表語從句中充當(dāng)主語或賓等。    如：That fact is that more than seventy percent of the earths surface is covered by water.What he told you was what had been discussed at the meeting. 3.  If 與whether     均意為“是否”引導(dǎo)表語從句

8、時，只能用whether, 不能用if。如：     The question is whether we can finish our work by tomorrow evening.4    語氣 1）主語為advice, order, idea, notion, proposal, suggestion, request等一些表示“建議、勸說、命令”的名詞，之后的表語從句中，謂語動詞用虛擬語氣。should+動詞原形表示，should可省略。如：  

9、;My suggestion is that we (should) start early tomorrow. 我的建議是我們明天一早就出發(fā)。     Our only request is that this should be settled as soon as possible.我們唯一的請求就是盡快解決這個問題。2 As if/though引導(dǎo)的表語從句時，從句謂語多用虛擬語氣。因為從句中的情況與事實不相符。  &

10、#160;具體來說，如果從句表示與現(xiàn)在事實相反，謂語動詞用一般過去式；與過去事實相反時，謂語動詞“had+done”， 如果從句表示將來的可能性不大，用would(might ,could )+動詞原形，如：Li Lei is now in a new jacket he looks as if he were an American boy. The girl is giving us a vivid description of moon. It seems as if she had been to the moon many times.但是，如果as i

11、f ,as though 引導(dǎo)的表語從句所表示的與事實相符，從句則用陳述語氣，如：The clouds are gathering. It looks as if is going to rain. 5  時態(tài)   不像賓語從句，在有表語從句的復(fù)合句中，主句時態(tài)和從句時態(tài)可以不一致。The question is who will travel with me to Beijing tomorrow. The question is why he cried yesterday.6  記住兩個句型A The reason is tha

12、t    例如： The reason is that he didn't catch the bus. 理由是他沒有趕上公共汽車?！癟hat is why.”與“That is the reason why.”同義， 只不過從語法結(jié)構(gòu)上講， “That is the reason why.”中why引導(dǎo)的是個，將其中的the reason去掉則與“That is why.”結(jié)構(gòu)一樣， 例如： That is (the reason) why I cannot agree. 這就是我不能同意的理由BThat is why （because）常用句

13、型， 意為“這就是的原因/因此”， 其中why引導(dǎo)的名詞性從句在句中作表語， 該句型通常用于針對前面已經(jīng)說明過的原因進(jìn)行總結(jié) That is why he came late. 那就是他晚的原因。That is because he didn't catch the bus. 那是因為他沒有趕上公共汽車。That is because.也是個常用句型， 意為“這就是為什么/因為”。“That is because.”與“That is why.”之間的不同在于“That is because.”指原因或理由， “That is why.”則指由于各種原因所造成的后果He did not

14、 see the film last night. That is because he had to help his little sister with her homework.昨天晚上他沒有去看電影， 那是因為他得幫助他的妹妹做作業(yè)。(第一句話說明結(jié)果， 第二句話說明原因)He had seen the film before. That is why he did not see it last night.他以前曾看過那部電影， 因此他昨天晚上沒有去看。(第一句話說明原因， 第二句話說明結(jié)果)練習(xí)1. The question is _ we will have our spor

15、ts meet next week.A. that B. if C. when D. whether2The reason why he failed is _he was too careless.A. because B. that C. for D. because of3. Go and get your coat. It s _you left itA. where B. there C. there where D. where there4The problem is _to take the place of TedA. who can we get B. what we ca

16、n getC. who we can get D. that we can get5. What I want to know is _ he likes the gift given by us.A. that B. if C. whether D.不填6. The reason is_I missed the bus.A. that B. when C. why D. what7. That is _ _ we were late last time. A. that B. when C. why D. what8. She looked _ she were ten years youn

17、ger.A. that B. like C. as D. as though9.I fell sick!-I think it is _ you are doing too much.A. why B. when C. what D. because10. The reason why he hasnt come is _.A. because his mother is ill B. because of his mothers being illC. that his mother is ill D. for his mother is ill11. He was born here.-

18、That is _ he likes the place so much.A. that B. what C. why D. how12.That is _ Lu Xun once lived.A. what B. where C. that D. why that/what的區(qū)別1_your father wants to know is_ getting on with your studies.A. What; how are you B. That；how you are C. How；that you are D. What；how you are2. The trouble is_

19、we are short of tools.A. what B. that C. how D. why that3. America was _was first called “India” by Columbus.A. what B. where C. the place D. there where4. China is becoming stronger and stronger. It is no longer_ .A. what it used to be B. what it was used to beingC. what it used to being D. what it was used to be5. _he really means is _he disagrees with us.A. What that B. That what C. What what D. That what6. The energy is _ makes the cells able to do their work.A. that B. which C. what D. such 高考練習(xí)1 I drove to Zhuhai for the air show last week .Is that_ yo