8.(★★★★★)We thought of selling this old furniture, but we’ve decided to________it .It might be valuable. (NMET2002)

　　 A.hold on to B.keep up with C.turn to D.look after

7.(★★★★★)-You seemed to be deeply struck by his skill.

　　 -Not exactly so.It was his courage________ his that really struck me most.

　　 A.rather than B.as well as C.but also D.not as

6.(★★★★)-Whose advice do you think I should take?

　　 -________.

　　 A.It’s none of my business B.It’s your own business

　　 C.There is nothing to do with me D.It’s up to you

5.(★★★★)Mr Suith sold that magnificent cottage of his on the sea________2 000 000 dollars.

　　 A.at B.for C.to D.by

4.(★★★★)Sports and games can be________great help to us.

　　 A.of B.having C.done D.in

3.(★★★★)Early________the morning of May 1,we started off________the mountain village.

　　 A.in; for B.in; to C.on; / D.on; for

2.(★★★★)The policeman helped the old woman________the street.

　　 A.through B.past C.across D.over

1.(★★★★)As soon as he entered the room, he took________his cap and sat down.

　　 A.off B.out C.away D.down

2.The home improvements have taken what little there is ________my spare time.

　　 A.from B.in C.of D.at

　　 (NMET2001)

　　 命题意图：考查介词of的用法，属于五星级题目。

　　 知识依托：little of my spare time.意思是“仅有的业余时间”。

　　 错解分析：B项迷惑性较大，受 in one’s spare time短语影响。

　　 解题方法与技巧：of在此表示“……中的部分/全部”，与名词little连用。该句为一个含有感叹式宾语从句的主从复合句，连接代词what修饰的是在从句中作主语的名词，little提到从句之首，little前无冠词表示否定，意为“少到几乎没有”，如：

　　 I understand little of his speech.他的讲话我几乎没有听懂。

　　 答案：C

　　 ●锦囊妙计

　　 介词比较复杂，注意以下表示原因的介词。

　　 ①because of表示引起结果的直接原因，意义与连词because相同。例如：

　　 He retired last month because of illness/because he was ill.上个月他因病退休了。

　　 ②for表示内在的、心理上的原因，常与表示喜、怒、哀、乐等情感名词连用；还可表示某种动作或结果的起因。而连词for则表示某种结果的补充理由或显而易见的原因。

　　 例如：He trembled for fear.他怕发抖。

　　 Thank you for your help.谢谢你的帮助。

　　 When he was still a young man,he was forced to leave his homeland for political reasons.他还是青年时就因为政治原因离开了他的祖国。

　　 ③by表示外部的，尤其是暴力的或无意中造成某种结果的原因。例如：

　　 Her body was bent by age.岁月使得他的腰也弯了。

　　 The general died by his own hand.将军自杀了。

　　 She took your umbrella by mistake.她错拿了你的雨伞。

　　 ④at表示某种情绪或动作的起因，多与“喜，怒，哀，乐”等义的词连用，常译作“听到……”，“看到……”。例如：

　　 The whole nation was in deep sorrow at the news.听到这个消息，全国人民极为悲痛。

　　 He jumped at the news.听到这个消息，他蹦了起来。

　　 ⑤on表示能作为依据或条件的原因，常译为“依照……”。例如：

　　 He has given up smoking on medical advice.他遵照医生的劝告已经把烟戒了。

　　 ⑥of和from表原因时常与die或类似意义的词连用。die of指因疾病、饥饿、寒冷，或害怕、羞愧等内因或外因造成的死亡结果；die from表示因伤、事故等外因或不明原因造成的死亡。与疾病名词连用时，二者均可。from还可表示懒惰等造成某种后果的原因。例如：

　　 His son having been killed in the war,the man died of a broken heart.儿子死于战争后，老人也因伤心过度而亡。

　　 In big cities during cold winter months,many old people die from the polluted air.寒冷的冬天，大城市里的许多老人死于污染的空气。

　　 She died of /from cancer. 她死于癌症。

　　 He wasn’t ill;he stayed in bed from laziness.他没病，他躺在床上只是偷懒。

　　 ⑦with指生理上或情感上的外界到内心的原因，意为“随着……。”例如：Gessler turned red with anger.盖斯勒气得脸都红了。

　　 ⑧owing to,相当于because of，多表示引起某种不良后果的原因。例如：

　　 Owing to the rain they could not come.都是因为那场雨他们才没能来。

　　 Owing to his lacking of experience,John failed this time.因为经验不足，这次约翰又失败了。

　　 注：owing to也可表示“欠……钱”之意。How much is he owing to you?他欠你多少钱？

　　 ⑨thanks to表示引起某种幸运结果的原因，常译为“幸亏……，多亏……”。例如：

　　 Thanks to the timely rain,the farmer had a good harvest.多亏那场及时雨，农民才有了个好收成。

　　 ⑩out of表示动机的起因，常译为“出于……”。例如：

　　 He asked the question out of curiosity.出于好奇，他提了这个问题。

　　 He did it out of pity.他做那事是出于同情。

　　 ●歼灭难点训练

1.________production up by 60%, the company has had another excellent year.

　　 A.As B.For C.With D.Through

　　 (NMET2000)

　　 命题意图：本题根据句意和结构考查介词用法，属于五星级题目。

　　 知识依托：“with+复合宾语”结构。

　　 错解分析：四个选项均为介词，有一定迷惑性。

　　 解题方法与技巧：句中“with+名词(宾语)+副词(宾补)”结构作状语表示原因。例如：Tian An Men looks grander than ever with all lights on.在华灯掩映下，天安门显得更加雄伟壮观。

　　 答案：C