英语单项知识的讲解与练习(46)

英语单项知识的讲解与练习（46）

226、for的用法

（1）、for 表示“限用于”。如：a ticket for tonight今晚的票；

（2）、由for引导的时间短语，all加名词前的for必须省去。

（3）、句子的谓语动词是非延续性的，for不能省。如：I haven’t spoken to him for three months.

（4）、for years/ for ages中的for在句首不能省。

（5）、for短语修饰动词时，不用动名词作for的宾语。如：The children set off for（去going to）school. 当for短语修饰名词时，用动名词作for的宾语，表示某物的用途。如：I have sent my coat away for cleaning.

（6）、用for（因为）连接的并列句，前一分句表示结果，后一分句表示原因；用so（所以）连接的并列句与之相反，前一分句表示原因，后一分句表示结果。

练习：

①I wanted two seats ___ Madame Curie for Friday night, I rang the cinema to see if I could book two tickets.

A. of

B. about

C. to

D. for

②He sold his old car ___ ￥2000, and bought a new one ___ double price.

A. at; at

B. for; at

C. at; for

D. for; for

③He’s only a boy ___ 8 years old, but he’s been to the Gr eat Wall ___ 5 times.

A. for; for

B. of; for

C. of; /

D. at; to

④“Are you ___ my plan?”said the chairman angrily.

A. go against

B. for

C. going on

D. in

227、be free to do sth

（1）、free the bird from/ of the cage 把鸟从笼中放出；free somebody from/ of debts 使某人免除债务(from 注重免除之意，of注重救济之意)；be free to enter the room = be free of the room 随便进入房间；

（2）、位子是空的要用be free；free 可指时间上的“空闲的（not busy）”，也可指某一场所“空闲着（not being used）”；free 自由的、随意的、随心所欲的，等于：be able to do what one wants to （3）、free解放、使自由，作动词意为“放松、放走”。如：You must free the butter fly.

（4）、free 放在动词后，表示不需要付钱或免费的。如：You can eat free in my restaurant.

练习：

①How we wished to be ___ from noises.

A. keep

B. stop

C. free

D. fit

②I have two ___ evenings this week. I can help you to do it.

A. free

B. good

C. well

D. useful

③Few areas in the world nowadays are completely free ___ air pollution.

A. against

B. with

C. to

D. of

④You are ___ to go or stay. It is none of my business.

A. ready

B. willing

C. easy

D. free

⑤Sometimes, supermarkets offer customers some goods ___.

A. for freedom

B. for freely

C. free of charge

D. free from charge

⑥After Lincoln was made ___ president of the US, he insisted on the slaves ___.

A./; be set free

B. /; being set free

C. the; setting free

D. the; being set free

228、guarantee to do sth

（1）、guarantee作名词后接on或with，表示某种产品的保单；如：A six-month guarantee on the TV set for all repairs might be necessary.

（2）、guarantee后接to，表示“对……的保证”。如：A money-back guarantee to those unsatisfied with the products;

（3）、guarantee作动词宾语后接against，表示“保证不受”；如：This contract guarantees you against damage by fire or flood.

（4）、guarantee后接to，表示“为某人提供……的保证”。如：