4.宾语从句
宾语从句可以作及物动词的宾语，介词的宾语，某些形容词的宾语以及非谓语动词的宾语。
①及物动词后的宾语从句：
She will give whoever needs help a warm support……任何需要帮助的人……
I wonder why she refused my invitation……她为什么拒绝了我的邀请
②介词后的宾语从句：
I always think of how I can improve my spoken English.我总是在思考如何提高我的口语水平。
The teacher is satisfied with what she has said. 老师对他所说的话很满意。
③某些形容词后的宾语从句：
I am sure that you will make greater progress in English through hard work.
……通过努力工作，你将取得更大的进步
We are surprised that he has left without saying goodbye to us…….他没有告别就走了
④非谓语动词后的宾语从句：
Realizing that it was just a difference in custom, the foreigner smiled and said nothing.
On being asked whether he had had a good time in Australia, he answered “Terrible ”.
⑤关于形式宾语it
We must make it clear that anyone who breaks the law will be punished.
我们必须清楚任何违犯法律的人都将受到惩罚。
I find it necessary that we should ask him for his advice.我发现我们有必要征求他的意见。
5.名词性从句重难点
①在名词性从句中，疑问句要用陈述句的语序。例如：
▲Can you make sure ____the gold ring ?
A.where Alice had put B.where had Alice put
C.where Alice has put D.where has Alice put
▲You can't imagine __when they received these nice Christmas presents.
A.how they were excited B.how excited they were
C.how excited were they D.they were how excited
②动词 doubt 用在疑问句或否定句中，其后宾语从句常用 that 作连接词;用在肯定句中，连接词用 whether 或 if 皆可，而不用that。
Do you doubt that he will win ?
I don't doubt that your proposition is wrong .
He doubt whether I know it .
③ 否定转移问题。
▲将think, believe, suppose, expect, fancy, guess, imagine等动词后面跟宾语从句时否定转移
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。
We don't expect he will come tonight , will he ?
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。
▲将seem, appear 等后的从句的否定转移
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。
④主谓一致问题。
What he wanted to see was an end to all the armies of the world.
What I bought were three English books.
⑤语气问题
▲在含有 suggest , order , demand , propose , command , request , insist, desire, require, advise 等表示要求、命令、建议、决定等意义的动词后，that从句常用“should+ 动词原形”的结构
I suggest we (should) set off at once. 我建议我们应该立刻出发。
▲在It is +过去分词+that的主语从句中 decided，demanded，desired，insisted，ordered，proposed，suggested，recommended，requested， required等。
It is desired that we(should)get everything ready this evening.
▲在表语从句或同位语从句中
The suggestion that the mayor (should) present the prizes was accepted by everyone.
▲在It is(was)+形容词+that从句中要用虚拟语气，即(should +)动词原形，表示建议或不满、惊奇等情绪。常用于此类的形容词有 essential，important，natural，necessary，possible，strange，等。
It is necessary that a college student ____at least a foreign language.(上海1993)
A.masters B.should master C.mastered D.will master
⑥What引导名词从句的特殊含义:
▲What was once regarded as impossible has now become a reality.
(what为“所……的事”，相当于“the thing that…;all that…;everything that…”)
▲After ________ seemed a very long time，I opened my eye and found myself in bed.(M ET'93)
A.what B.when C.that D.which
(what相当于“the time that”，表示“……时间”)
▲He is not what he was a few years ago. Who is it that has made Fred what he is now?
(what表示“……的人”，相当于“the person that…”)
▲What is now the North Sahara Desert was once a civilized world.
(what表示“……的地方”，相当于“the place that…”)
▲Our income is now double what it was ten years ago
(what表示“……的数目”，相当于“the amount /number that…”)
⑦不可省略的连词：
▲介词后的连词不可省略
Before I came downstairs I had prepared myself very carefully for what I must say.
下楼之前，我已经把我要说的认真准备好了。
▲引导主语从句和同位语从句的连词不可省略
That she was chosen made us very happy.她被选上了，我们很高兴。
We heard the news that our team had won. 我们听到消息说我们队赢了。
▲宾语从句有多个that引导时，从第二个及其后面的that不能省略
I believe(that)you have done your best and that things will get better.
⑧比较：whether 与 if 均为“是否”的意思。但在下列情况下，whether 不能被if 取代：
▲whether 引导主语从句在句首
Whether she comes or not doesn’t concern me .她是否来与我无关。
▲引导表语从句
His first question was whether she had arrived yet. 他问第一个问题就是她来了没有。
▲引导同位语从句
Answer my question whether you are coming.回答我你是否来的问题。
▲whether 从句作介词宾语
I worry about whether I hurt her feeling .我担心是否伤了她的感情。
▲与or not连在一起
I don’t know whether or not he is going to Japan.我不知道他是否去日本。
大部分连接词引导的主语从句都可以置于句末，用it 充当形式主语。例如：
It is not important who will go. 谁去，这不重要。
It is still unknown which team will win the match. 到底谁赢呢，形势尚不明朗。
