题目内容
17.I was really anxious about you.You ______ home without a word.( )| A. | mustn't leave | B. | shouldn't have left | ||
| C. | couldn't have left | D. | needn't leave |
分析 我真地很担心你,你本不该一句话不说就离家出走的.
解答 答案:B
A.mustn't leave 不许离开; B.shouldn't have left 本不该离开; C.couldn't have left本不能离开; D.needn't leave 不需要离开;根据I was really anxious about you使用了一般过去时可知,此处表达的应是:过去本不应该做而事实上却做了的事情;即表达了说话人的一种强烈的感情,应使用虚拟语气;故选B.
点评 做此类题时,需要熟练掌握虚拟语气的用法.学会识别虚拟语气句,并正确选择出它的表达方式.另外,还要知道情态动词would/should/could/might用在虚拟语气句时,都有各自的意义(例如:would表示结果,会;should 应该;could表示能力,允许或可能性:能,可以,可能;might表示推测,可能等),因此需要根据句意,做出正确的选择.
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