6. Doing your homework is a sure way to improve your test scores, and this is especially true _____ it comes to classroom tests.

　　A) when B) since C) before D) after

　　A A A

　　7. Americans eat _____ as they actually need every day. (98/06/56)

　　A) twice as much protein

　　B) twice protein as much

　　C) protein as much twice

　　D) protein as twice much

　　8. _____ seeing the damage he had done, the child felt ashamed. (99/01/52)

　　A) By B) On C) At D) For

　　9. I was advised to arrange for insurance _____ I needed medical treatment. (99/01/65)

　　A) nevertheless B) although

　　C) in case D) so that

　　A B C

　　10. I've already told you that I'm going to buy it, _____.

　　A) however much it costs

　　B) however does it costs much

　　C) how much does it cost

　　D) no matter how it costs

　　A

　　名詞從句包括主語(yǔ)從句、賓語(yǔ)從句，其中有介詞與形容詞的賓語(yǔ)從句、表語(yǔ)從句和同位語(yǔ)從句。

　　名詞從句

　　1 .主語(yǔ)從句在句子充當(dāng)主語(yǔ)， 謂語(yǔ)動(dòng)詞用第三人稱(chēng)單數(shù)

　　Why he refused to work with you is still unclear now.

　　Whoever comes is welcome.

　　主語(yǔ)從句前的that不能省，僅起連接作用。通常由it作形式主語(yǔ),that 從句后置。

　　That he became a lawyer may have been due to his mother’s influence.

　　It is not true that he has moved to New York.

　　2. 賓語(yǔ)從句,要用陳述句語(yǔ)序。

　　I don’t know where the sound came from.

　　Don’t be satisfied with what you have achieved.

　　Please tell me what is wrong/the matter with you, and I can help you.

　　由 that 引導(dǎo)的從句只能用在介詞 but, besides, except, in, save, saving 之后。例如：

　　I know nothing about him except/but that he is Japanese.

　　He differs from his brother in that he is very selfish.

　　whether 與if 在名詞從句中的用法區(qū)別(if一般只用于賓語(yǔ)從句)

　　1). 由whether引導(dǎo)的主語(yǔ)從句，表語(yǔ)從句不能由if來(lái)替換

　　Whether he will attend the meeting is uncertain.

　　The question is whether he will come.

　　2).賓語(yǔ)從句中, whether可以和or not直接連用.可以說(shuō)whether or not而不說(shuō)if or not。

　　I don’t care whether or not he will attend the meeting.

　　I don’t care if/whether he will attend the meeting or not.

　　3).whether可用在介詞后，或用在帶 to的不定式前，if則不可以。

　　Judy doesn't know whether to get married now or to wait.

　　I haven’t settled the question of whether I’ll go back home.

　　重要考點(diǎn)：出現(xiàn)if引導(dǎo)的從句時(shí)先判斷是賓語(yǔ)從句還是條件狀語(yǔ)從句。當(dāng)if意為“是否”時(shí)，引導(dǎo)賓語(yǔ)從句，時(shí)態(tài)根據(jù)時(shí)間狀語(yǔ)和主句謂語(yǔ)來(lái)定。當(dāng)if意為“如果”時(shí)，引導(dǎo)條件狀語(yǔ)從句，用一般時(shí)表將來(lái)。

　　I won’t go there if he _____ (come) here tomorrow.(條件狀語(yǔ)從句)

　　I don’t know if he _______ (come) here tomorrow.(賓語(yǔ)從句)

　　comes

　　will come