语法练习

1.___ he be free tomorrow, he would come.

A.Would

B.Should

C.Has

D.Were to

2.___ up with your classmates, you must study hard right now.

A.To catch

B.Caught

C.Being caught

D.Catching

3.The mother was afraid to let the boy ___ the street himself.

A.to risk crossing

B.risk crossing

C.to risk to cross

D.risk cross

4.John had the report ___ as soon as he finished ___ it.

A.to be typed, to write

B.typed, to write

C.being typed, writing

D.typed, writing

5.There is no easy solution to Japan's labor ___.

A.decline

B.vacancy

C.rarity

D.shortage

答案详解

1.[B]【解析】虚拟语气。表示未来实现可能性极小，if从句中用should/were to，主句用“should/would/could/might+动词原形”。若if省略，则从句中“should/were to”提前。因此答案选B项。句意：要是他明天有空的话，他就来了。

2.[A]【解析】不定式作目的状语。因此答案选A项。句意：要想赶上你的同学，你必须从现在开始就努力学习。

3.[B]【解析】let sb.+动词原形，意为“让某人做某事”；risk后跟动词-ing形式，意为“冒险做某事”。因此答案选B项。句意：母亲害怕让孩子一个人穿过街道。

4.[D]【解析】非谓语动词。have sth. done意为“使某人做某事”；finish doing sth.意为“做完某事”。因此答案选D项。句意：约翰一写2完报告就让人把它打印了出来。

5.[D]【解析】名词词义辨析。shortage意为“缺少，缺乏”，符合题意。decline意为“下降，减少”；vancancy意为“空缺”，指职务或位置空着；rarity意为“稀罕，稀有”。因此答案选D项。句意：日本劳动力缺乏的问题不易解决。