全国高中英语语法大全资料2

17.4 if, whether引导的名词从句
1）yes-no型疑问从句
　　从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，其功能和wh-从句的功能相同， 例如：
　主语：Whether the plan is feasible remains to be proved. 这一计划是否可行还有等证实。

　宾语：Let us know whether / if you can finish the article before Friday.　请让我们知道你是否能在星期五以前把文章写完。

　表语：The point is whether we should lend him the money.　问题在于我们是否应该借钱给他。

　同位语：They are investigating the question whether the man is trustworthy.　他们调查他是否值得信赖。

　形容词宾语： She's doubtful whether we shall be able to come.　 她怀疑我们是否能够前来。

　介词宾语： I worry about whether he can pass through the crisis of his illness.　　我担心他是否能度过疾病的危险期。

2）选择性疑问从句
　 选择性疑问从句由关联词if/whether…or或whethe…or not构成，例如：
　 Please tell me whether / if they are Swedish or Danish. 请告诉我他们是瑞典人还是丹麦人。
　 I don't care whether you like the plan or not.我不在乎你是否喜欢该计划。
17.5 否定转移
1) 将think, believe, suppose, expect, fancy, imagine等动词后面宾语从句的否定词转移到主句中，即主句的谓语动词用否定式，而从句的谓语动词用肯定式。
　 I don't think I know you.　我想我并不认识你。
　 I don' t believe he will come.　我相信他不回来。
注意：若谓语动词为hope,宾语从句中的否定词不能转移。
　 I hope you weren't ill. 我想你没有生病吧。

2) 将seem, appear 等后的从句的否定转移到前面。
　 It doesn't seem that they know where to go.
　 看来他们不知道往哪去。
　 It doesn't appear that we'll have a sunny day tomorrow.
　 看来我们明天不会碰上好天气。

3) 有时将动名词，介词短语或整个从句的否定转变为对谓语动词的否定。
　 I don't remember having ever seen such a man.　
　 我记得从未见过这样一个人。 (not否定动名词短语 having…)
　 It's not a place where anyone would expect to see strange characters on the street.
　 在这里，人们不会想到在街上会碰上陌生的人。
　(anyone 作主语，从句中的谓语动词不能用否定形式。)

4) 有时状语或状语从句中否定可以转移到谓语动词前。
　 The ant is not gathering this for itself alone.　(否定状语)　蚂蚁不只是为自己采食。

　 He was not ready to believe something just because Aristotle said so. (否定because状语) 他并不因亚里斯多德说过如何如何，就轻信此事。

　She had not been married many weeks when that man's younger brother saw her and was struck by her beauty.　(否定状语many weeks)　她结婚还不到几个月，这个人的弟弟就看见她了，并对她的美貌着了迷。
定语从句
18.1 关系代词引导的定语从句
　　关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。
1）who, whom, that
　 这些词代替的先行词是人的名词或代词，在从句中所起作用如下：
　 Is he the man who/that wants to see you?
他就是想见你的人吗？（who/that在从句中作主语）
　 He is the man whom/ that I saw yesterday.
他就是我昨天见的那个人。（whom/that在从句中作宾语）
2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换）, 例如：
　 They rushed over to help the man whose car had broken down.　 那人车坏了，大家都跑过去帮忙。
　 Please pass me the book whose (of which) cover is green.　请递给我那本绿皮的书。

3）which, that
　　它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如：
　　A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作宾语）
　　The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语）

18.2 关系副词引导的定语从句
　 关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。
1）when, where, why
　 关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如：
　 There are occasions when (on which) one must yield.　任何人都有不得不屈服的时候。
　 Beijing is the place where (in which) I was born.　北京是我的出生地。
　 Is this the reason why (for which) he refused our offer?　这就是他拒绝我们帮助他的理由吗？

2）that代替关系副词
　 that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如：
　 His father died the year (that / when / in which) he was born.　他父亲在他出生那年逝世了。
　 He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。

18.3 判断关系代词与关系副词
　 方法一： 用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如：
　 This is the mountain village where I stayed last year.
　 I'll never forget the days when I worked together with you.

　 判断改错（注：先显示题，再显示答案，横线；用不同的颜色表示出。）
　 （错） This is the mountain village where I visited last year.
　 （错） I will never forget the days when I spent in the countryside.
　 （对） This is the mountain village (which) I visited last year.
　 （对） I'll never forget the days (which) I spent in the countryside.

　　习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。

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