语法练习

1.As Mr. Best was passing the bookshop, he thought he'd just ___ to see whether any interesting books wereon sale.

A.look in

B.look up

C.look around

D.look for

2.I can assure you that under no circumstances ___ his motherland.

A.he will betray

B.will he betray

C.he will not betray

D.will he not betray

3.It is bad manner to ___ other people behind their backs.

A.do up

B.do by

C.do away with

D.do down

4.Language belongs to each member of the socity, to the cleaner ___ to the professor.

A.as far as

B.the same as

C.as much as

D.as long as

5.___ otherwise directed by a doctor, this medicine should be taken three times a day.

A.Even if

B.Unless

C.Except that

D.As

答案详解

1.[A]【解析】动词词组。look in 意为“顺便，短时间拜访”；look up 意为“查找”；look round 意为“参加，游览”；look for 意为“寻找”。根据题意A项正确。句意：当拜斯特先生路过书店时，他想顺便进去看看是否有有趣的书出售。

2.[B]【解析】主谓倒装。只有B项符合题意。我可以向你保证无论在什么情况下他都不会背叛他的祖国。

3.[D]【解析】动词词组。do up 意为“绑紧，打包，整理”；do away with 意为“祛除”；do down 意为“说坏话，诋毁”。根据题意，只有D项正确。句意：背后说别人坏话是不好的行为。

4.[A]【解析】短语辨析。as much as 勇于同等程度的比较，表示“和……在同等程度”；the same as 一般只作表语或定语。as long as 表示“只要”；as far as 表示“和……一样远”。根据题意只有A项正确。句意：语言属于社会中的每一个成员，对于清洁工和教授而言没有什么两样。

5.[B]【解析】连词用法。本题中的otherwise 是副词，意为“另外；别的方式；在其他方面”。根据题意，应选择B项。句意：除非医生另有指示，否则这药应一天吃三次。