名词性从句
一、什么是名词性从句？
1. What you did moved me.
2. I believe that he is honest.
3. The most important thing is that you should have a definite goal.
4. We all know the truth that the earth goes around the sun.
主语从句、宾语从句、表语从句、同位语从句相当于一个名词，所以它们是名词性从句。
也就是说，相当于名词的从句是名词性从句。
二、引导名词性从句有哪些连接词？
不缺成分用 1. 从属连词: that, whether, if
没意思只连接 是否 是否
缺成分用 2. 连接代词: what, which, who, whom, whose
什么 哪个/哪些 谁 谁 谁的
whatever, whichever, whoever, whomever
无论什么 无论哪个/哪些 无论谁 无论谁
不缺成分用 3. 连接副词: when, where, how, why
什么时间 什么地方 如何 为什么
三. 名词性从句的识别
1. 主语从句：从句作主语
主语位置上的从句是主语从句。
1) That he will succeed is certain.
2) Whether he will go there is not known.
3) What he said is not true.
4) Whoever comes is welcome.
5) When they’ll start the project has not been decided yet.
2. 宾语从句：从句作宾语
动词后，介词后，形容词后是宾从。
1) I knew what they were talking about.
动词宾从
2) It all depends on whether they will support us.
介词宾从
3) I’m not sure whether they will come to the meeting.
形容词宾从
3. 表语从句：从句作表语
系动词后是表从，主语+系动词+表从
系动词be, look, seem, remain, appear, feel, sound + 表从
1) The truthis that I have never been there.
2) The reason why he was late was that he got up late.
3) It looksas if it is going to rain.
4. 同位语从句：从句作同位语，说明前面名词的内容
同从常位于fact, hope, thought, suggestion, idea, news, problem, possibility, truth, decision, evidence, opinion, feeling, belief, message, doubt, warning, question, request等名词后，说明名词的内容。
1) I don’t know about the fact that he is a teacher.
2) They expressed the hope that they would come over to visit China again.
3) We all know the truth that the earth goes round the sun.
4) The suggestion that smoking should be forbidden in public places is necessary.
三、名词性从句连接词的选择
做题方法：缺什么补什么，什么也不缺用that
1. 从句不缺成分，从1类和3类里选，正确翻译句子，根据句子所要表达的意思去选，缺什么补什么。
2. 从句缺成分，从2类里选，正确翻译句子，根据句子所要表达的意思去选，缺什么补什么。
1. 主语从句
1) _______ the child formed the habit of playing computer games made his mother angry.
2) In my opinion, _______ matters is not one's looks, but one's inner thoughts.
3) _________ will be our English teacher in the new term hasn't been decided yet.
4) _________ Zhai Zhigang ate his food in space is what we want to know.
5) ________ they will have the sports meeting is still a question, for they have so many things to do.
6) _________ he didn't come yesterday is unknown.
7) ___________was said here must be kept secret.
主语从句在后面
1) It is a pity____ we can't arrive at the scene in time.
2) It doesn't interest me ______ you succeed or not.
主语从句作主语，谓语动词用单数
1) What she said ______ (be) right.
2) Who is responsible for the accidents ______ (be) not clear.
很少考，但要知道
第1：2个或2个以上主语从句作主语时，谓语动词用原形。
When they will set off for London and where they will stay _______ (have) not been decided yet.
第2：2个或多个连接词引导1个主语从句时，谓语动词用单数。
When and where the conference will be held _______ (has) not been decided yet.
第3：What引导的主从，谓语动词的单复数由后面的名词决定。
What we need _________ (be) more time.
What he needs _________ (be) that book.
What he needs _________ (be) some books.
短改对主从的考查
1) If she will come to his birthday party is still unknown.
2) That won’t make much difference whether he will join us.
3) It matters little how a man dies, but that matters much is how he lives.
2. 宾语从句
1) He said ________he would like to see the headmaster.
2) Jane said _______she wasn’t late for the meeting.
3) Lily wanted to know ____________ her grandma liked the handbag.
4) Let’s see ____________ we can find out some information about that city.
5) Please tell me ________ we have to see.
6) He made it clear to the public _______ he did an important and necessary job.
3. 表语从句
1) My suggestion is _______ we should go shopping.
2) The reason why he was late was _______ he didn’t catch the early bus.
3) That’s _______ we should do.
4) I’d like to start my own business — that’s_____ I’d do if I had the money.
5) The question is ________ we’ll complete the works.
6) The house is ________ Lu Xun once lived.
7) This is ______ we overcame the difficulties.
8) That is ______ she was absent yesterday.
9) I’m afraid he’s more of a talker than a doer, whichis _____ he never finishes anything.
4. 同位语从句
1) The thought ______ he might fail in the exam worried him.
2) John left you a message ______ he would pick you up at 6 o’clock.
3) He often asked me the question ________ the work was worth doing.
4) My question _________ I could operate the machine has not been answered.
5) The question ________ should do the work requires consideration.
6) The problem_______ city we are going to, Qingdao or Dalian, is not decided.
7) I have no idea _______ he is doing now.
8) I have no idea _______ will take the place of Tom.
9) I have no idea _______ they’ll be back and settle down.
分隔式同从
1) The fact has worried many scientists ______ the earth is becoming warmer and warmer these days.
2) A new teacher will come tomorrow _______ will teach you German.
空格前是doubt (怀疑), 前有no后用that, 无no用whether
1) There is no doubt __________ she is not fit for the job.
2) I have some doubt _________ he is the best man for the job.
四、注意事项
用whether不用if 的情况：
1) The question is __________ the film is worth seeing. 表从用whether
2) The news _________ our team has won the match is unknown. 同从用whether
3) _______ we shall attend the meeting hasn’t been decided yet. 主从用whether
4) It hasn’t been decided ______________ we shall attend the meeting.
5) It all depends on __________ they will support us. 介词后用whether
6) He doesn’t know _________ to stay or not. whether to do
7) We didn’t know ___________ or not she was ready. whether or not
