表语从句讲解及专项练习、答案

1、表语从句讲解及专项练习概念：表语从句是在复合句中作表语的名词性从句。放在系动词之后 ，一般结构是“主语+系动词 +表语从句”可以接表语从句的连系动词有be, look, remai n, seem等。 The trouble is that we are short of mon ey.困难是我们资金短缺。 That is why stone walls are used in stead of fences around New En gla nd fields.这就是为什么在新英格兰用石头墙而不用栅栏的原因。 At that time, it seemed as if I could n&

2、#39;t think of the right word an yhow.当时我似乎怎么也想不出一个恰当的字眼来。引导表语从句的词：从属连词 that 、 whether 、as though 、as if （ That 引导表语从句时，在口语中，间或可以省略。）关系代词who, what, which, whom, whose, whatever, whoever, whomever, whichever关系副词when, where, why, how, however, whenever, wherever等。探 由从属连词that ，whether 引导的表语从句。that 在引导表

3、语从句时无词义，而whether 有词义，意为、“是否”。这时主句的主语常常是些抽象名词，如 question （问题 ）， trouble （ 麻烦 ），problem （问题 ）， result （ 结果 ）， chance （可能性 ），suggestion （ 建议 ），idea （想法 ）， reason （理由 ）等。表语从句对主句主语 进行说明、解释，使主语的内容具体化。例如： The trouble is（that ） she has lost his mo ney.The questi on is whether we n eed more ice cream.麻烦的事是他丢

4、了钱。问题是我们是否还需要一些冰淇淋。The problem was that it was too valuable for everyday use.问题是它作为日常之用太贵重了。What she couldn't understand was that fewer and fewer students showedin terest in her lesso ns.我们不能理解越来越少的学生对他的课不感兴趣。探由关系代词引导的表语从句。关系代词who, what, which, whom, whose, whatever, whoever, whomever, whichever

5、等引导表语从句，在句中作主语、宾语、表语，关系代词不能省略。例如：The question is which of us should go.问题是我们哪一个应该去。The problem was who could do the work.问题是谁能做这项工作。That's what he is worryi ng about.那就是他在担心的事。That's what we should do.那是我们应该做的。由关系副词引导的表语从句。关系副词 when, where, how, why除在句子起连接作用外，在从句中还充当时间，地点，方式或原因状语，本身具有词义。例如：

6、Go and get yo ur coat. It's where you left it.去把雨衣拿来。就在你原来放的地方。I had n either a rain coat nor an umbrella. That' s why I got wet through. 我 们既没伞也没雨衣，这是我们淋湿的原因。That is how mice ruin many stores of grain every year.那就是老鼠是怎样每年损害大量粮食的。That is what he is worried about.那就是他所担心的。由连词 because ， as if

7、/as though等引导的表语从句。It looked as if it was goi ng to snow.看起来好像要下雪了。That's because we never thought of it.这是因为我们从未想过此事。It seems as if he didn' t know the answer.好像他不知道答案。A. 表语从句一定要用陈述语序。False: The questi on is whe n can he arrive at the hotel.Right: The questi on is whe n he can arrive at the

8、 hotel.B. 不可以用 if，而用 whether 连接表语从句 （as if 例外）。引导宾语从句时可以互换if/whether位于介词后要用whether位于句首时要用whether 。引导表语从句，主语从句，同位语从句时要用whether 。False: The questi on is if the en emy is march ing towards us.Right: The questi on is whether the en emy is march ing towards us.Right: It looked as if he had un derstood th

9、is questi on.C. 不像宾语从句，在有表语从句的复合句中，主句时态和从句时态可以不一致。Right: The questi on is who will travel with me to Beiji ng tomorrow.Right: The questi on is why he cried yesterday.D. that 在表语从句中不可以省掉。基本用法表语从句只能置于主句之后，而主句的动词只能是联系动词。 名词性从句在 be 等系动词后作表语时被称为表语从句 例如： The problem is how we can get the things we n eed.问

10、题是我们怎样能弄到我们需要的东西。（ how 在表语从句中充当方式状语）The scissors are not what Ineed. 这把剪刀不是我所需要的。（what 在表语从句中充当宾语 ）What I told him was that I would find him a good play.我告诉他的是我会给他找个好剧本。 （what 在主语从句中作直接宾语，that 作为表语从句的引导词在该表语从句中不充当句子成分，不能省略）That is what I want to tell you.那就是我想要对你讲的。（what 在表语从句中充当直接宾语 ）That is why sh

11、e fa iled to pass the exam.那就是她考试不及格的原因。（why在表语从句中充当原因状语）表语测试1.The questi on is _we will have our sports meet n ext week.A.that B. ifC. whe nD. whether2.The 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. th

12、ere C. there where D. where there4.The problem is _to take the place of TedA. who can we get B. what we can getC. who we can get D. that we can get5.What I want to know is_he likes the gift give n by us.A. that B. if C. whether D.不填6.The reas on is _I missed the bus.A. that B. whe n C. why D. what7.

13、That is _ we were late last time.A. thatB. whe nC. why D. what8.She looked _she were ten years youn 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. whe n C. what D. because10. The reas on why he hast come is _ .n A. because his mother is illB. be

14、cause of his mothers being illC. that his mother is illD. for his mother is ill11. He was born here.-That is_he likes the place so much.A. thatB. what C. why D. how12. That is _Lu Xun once lived.A. whatB. where C. that D. why13. _ _your father wants to know isgetting on withyour studies.A. What; how

15、 are youB. That;how you areC. How ;that you areD. What;how you are14. The trouble is_we are short of tools.A. what B. that C. how D. why that15.America was _ was first called“ India ” by Columbus.16.China is beco ming stron ger and stro nger. It is no longer _A. what it used to beB. what it was used

16、 to beingC. what it used to being D. what it was used to be17. _ he really means is A. What that_ he disagrees with us.B. That whatC. What whatD. That what18. The en ergy is_ makes the cells able to do their work.A. that B. which C. what D. such19 I drove to Zhuhai for the air show last week.Is that

17、 _ you had a few days off?A. why B .what C. whe n D. where20 had n either a rain coat nor an umbrella_ I got wet through.A. It 's the reason B. That's why C. There's why D. It 's how21. See the flags on top of the build ing? That was_ we did this morning.A. whe nC.wherD. whatB. whiche' s game?22. - Are you still thinking about yesterday-Oh, that's _ .A. what m