三、情态动词常见错误设置及答题思路
[常见错误]
1.考情态动词表达推断、预测的逻辑意义。
2.考"情态动词+动词完成式"表达的虚拟意义。
所设置的错误通常出现在情态动词后接的动词形式上,即是接不定式的一般式,还是接不定式的完成式。
例句:
That small country at one time (A) must be (B) prosperous, for (C) it enjoyed a high level (D) of civilization.
(答案:B must have been,表示对过去的肯定推测)
In a (A) way I agree with you, but I think (B) you could present (C) your arguement in a much better (D) way.
(答案:C could have presented,表示"本来可以…"但实际没有做的虚拟意义)
I regret having left (A) the work unfinished (B)I should plan (C) everything ahead (D) carefully.
(答案:C should have planned,表示"本应该做"而实际未做的虚拟意义)
A piece of evidence shows (A) that life may exist (B) on earth (C) 38 billion years ago (D) .
(答案:B may have existed,表示根据逻辑推理对过去事情作出的可能性推测)
I got up early (A) but I didn t need to do (B) so, because (C) I had no work to do (D) that morning.
(答案:B needn t have done,表示做了不必做的事)
He knew (A) that she mustn t have taken (B) the book as (C) she hadn t been (D) in the house at that time.
(答案:B couldn t have taken,表示对过去的否定推测)
[辨错思路]
反复阅读题句,正确理解句子的含义,确定其表达推测、判断的语气是强烈还是缓和(委婉),语义是禁止、允许、劝阻、警告、评论还是惋惜,据此辨别句中划线的情态动词用词是否准确,所接动词形式是否符合语义要求,从而找出错误所在。从以往试题来看,有关情态动词的错误大都设置在该接动词完成式而误用一般式,请考生注意这一点。