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名词性从句
名词性从句：
主语从句、宾语从句、表语从句、同位语从句
一.连词: "that". 无词义，不充当任何成分，在宾语从句中有时可以省略，但以下几种情况不能省略，一是作介词宾语，二是主句谓语动词后接两个或两个以上的宾语从句时，三是被分隔开的宾语从句
"whether/if","是否' ①作介词宾语，②与or not连用时,③在主语从句、表语从句、同位语从句中只用“whether”. (句首）
连接代词：who(ever), whom(ever), whose(ever), which(ever), what(ever)
主、表、宾 宾 定 主、表、宾 主、表、宾
连接副词：when, where, why, how作状语 how many, how much
二．主语从句
常用it作形式主语的几种句型
It+系动词+n+that/wh-从句
It is a fact/honour/idea/mystery/news/pity/pleasure/shame/wonder+that...
2. It+系动词+形容词+that/wh-从句
It is clear/certain/important/likely/necessary/natural/obvious/right/strange+...
It+ 系动词+过去分词+that从句
It is announced/advised/believed/considered/decided/hoped/said/known/proved+...
It+特殊动词+that从句
It appears/happens/matters/seems/occurs+...
三．宾语从句
动词find, feel, think, consider, make, believe, guess, suppose,assume等后有宾语补足语时，则要用it作形式宾语，而将宾语从句后置.
hate, like, take, owe, have（声称，据传），take for granted等表“喜欢；痛恨；认为”的动词或动词短语和see to表“注意，留意”后有宾语从句，先用it作形式宾语.
否定转移，当主句谓语动词是think, suppose, believe, expect, imagine, fancy等时，从句的否定要转移到主句上来.
表语从句
可以用because, as if, as though引导，as if/as though引导得表语从句常跟在特定动词后，如seem, appear, look, taste, sound, feel等.
当主句的主语是reason时，表语从句用that引导.“The reason why...is that...
五．同位语从句
1. 后跟同位语从句的多是一些含义比较抽象的名词：fact, hope, idea, information,news,problem, possibility, promise, suggestion, truth, word, notice, belief, order等.
2. 定语从句与同位语从句的区别：定语从句是对先行词的修饰或限制.
同位语从句是对从句前面的抽象名词作进一步的说明和解释.
① The news that our team has won the game was true.（同位语从句）
② The news that he told me yesterday was true.（定语从句）
③ I made a promise that if anyone set me free I would make him very rich.（同位语从句）
④ The mother made a promise that pleased all her children.（定语从句）
名词性从句练习题
It is obvious to the students _______ they should get well prepared for their future.
Let me know ______ or not you can come.
We are interested in ______ you will attend the meeting.
______ the college will take in more new students this year is true.
______ I mean is that you need to keep a diet while you are working out.
I believe(that) you’ve done your best and ______ things will improve.
They share little in common except ______ they are from the same country.
It never occurred to me ______ you could succeed in persuading him to change his mind.
- Is there any possibility ______you could pick me up at the airport
- No problem.
It is still a mystery ______ the thief entered the room.
It is said ______ Mr.Black has arrived in Beijing.
It happened ______ I was out when she called.
I don’t think (that) my mother can agree to buy a new mobile phone for me.
I think it necessary ______ young people master a foreign language.
I know you don’t know ______ I think at all.
They told us once again ______ this would never happen.
The trouble is ______ we are short of funds.
He has lung cancer. That is ______ he has been smoking too much.
It sounds ______ you are from the south of the States.
The reason why he didn’t come is ______ he was ill.
I have no idea ______ will be in charge of the company when the manager is away.
______ he will come I am not sure.（是否）
He was wondering ______ to go home or stay at school.
I have made ______ a rule ______ I keep diaries.
It seems to me ______ you didn’t agree to the plan.
The newspaper have it ______ it will rain heavily tomorrow.
The teacher advised us ______ we should pay more attention to reading and writing.
Everyone could see what was happening and ______ Tom was really shocked.
The problem is _______ you can get in touch with him.（是否）
They are investigating the question ______ the man is trustworthy.（是否）
_______ you can come will make a difference.（是否）
We are discussing _______ we should close the shop.（是否）
_______ was most important to her, she told me, was her family.
The employers often give the job to _______ they believe has work experience with a strong sense of duty.
The two cars are racing close together. It’s unclear _______ will be the champion.
- Do you think it wise for Chinese mothers to try to do everything for their children
- No, that’s ______ they are mistaken.
- How do you think I can make up with Tony
- Put aside ______ you disagree and try to find ______ you have in common.
Many is willing to make friends with ______ shares the same hobbies and interests with her.
There is no doubt ______ he will come here.
It is doubtful _______ he will come here.
名词性从句
1. that 2. whether 3. whether 4. That 5. What 6. that 7. that 8. that 9. that 10. when / how 11. that 12. that 13. that 14. that 15. what 16. that 17. that 18. because 19. as if 20. that 21. who 22. whether 23. whether 24. it; that 25. that 26. that 27. that 28. that 29. whether 30. whether 31. whether 32. whether 33. What 34. Whoever 35. which 36. where 37. where; what 38. whoever 39. that 40. if / whether

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