题目内容
18.-David promised to come round to have supper with us today.-But he ____.I've been alone for half an hour.( )
| A. | won't | B. | hadn't | C. | hasn't | D. | doesn't |
分析 --David答应今天过来和我们一起吃晚餐.
--但是他还没来,我一个人呆了半个小时了.
解答 答案:C.
根据语境I've been alone for half an hour"我一个人呆了半个小时了."判断设空处的意思是"但是他还没来"强调"没来"这种状态延续到现在,所以用现在完成时.现在完成时的构成是:主语+have/has+动词的过去分词;主语是he,助动词用has,否定句为he hasn't,故答案为C.
点评 本题考查了动词的时态.做题时,一定要特别关注有关的时间短语,这是判断句子时态的标志.在没有时间状语的情况下可以联系上下文根据语境来做出正确判断.
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