四级语法系列练习－助动词、情态动词(2)

Unit 2 助动词、情态动词(二)

4. With all this work on hand, he _____ to the cineman last night.
A. mustn't go
B. wouldn't go
C. oughtn't to go
D. shouldn't have gone

5. You _____ all those calculations¹! We have a computer to do that sort of thing.
A. needn't have done
B. must not have done
C. shouldn't have done
D. can not have done

6. If you don't like to swim, you _____ stay at home.
A. should as well
B. may as well
C. can as well
D. would as well


答案：
4. D
译文：他手头有这么多工作，昨天晚上就不该去看电影。
本句是情态动词should 后接完成时态的用法。情态动词should 和ought to 后接现在完成式，表示应该做而没有做的事，表示责备、后悔等。

5. A
译文：你没有必要做全部计算，这类计算我们用计算机来做。
本句是情态动词need 后接完成时的用法。need 作情态动词用时，通常用于否定句或疑问句中。“needn't + have+过去分词”表示“过去做了某事，但事实上没有必要做”。

6. B
译文：你要是不喜欢游泳的话，还是待在家里的好。
本句是情态动词may 与其他词搭配的用法。may as well 是一固定搭配，意为“不妨，无妨”，后接动词原形。
例如：You may as well know the matter .
你知道这件事也无妨。

1 calculations   

n.计算( calculation的名词复数 )；盘算；自私的打算；推断

参考例句：

• We can exclude the possibility of total loss from our calculations. 我们可以在预测中把彻底失败的可能性排除在外。 来自《简明英汉词典》
• He scored out both calculations and did them again. 他把两个计算结果都划掉，又把它们计算了一遍。 来自《简明英汉词典》