[考例2]
Ill tell Mary about her new job
tomorrow.
You ______ her last week.
(福建2004)
A. ought to tell B. would have told
C. must tell D. should have told
[点拨] 选D.句意为明天我就告诉玛莉有关她新工作的事情。你上星期就该告诉她。
4. We ought to learn more about our body and the fuel it needs to keep fit. (Reading)
[考点] ought to的用法和should差不多,只是语气稍重一些。其否定式为ought not to(oughtnt to)。ought to have done同should have done,意为本应该做某事而没有做。
[考例1] There was a lot of fun at yesterdays party. You ______ come,but why didnt you? (上海1999)
A. must have B. should
C. need have D. ought to have
[点拨] 选D.句意为昨天的晚会很有趣。你本应该来,可你为什么没有来呢?。must have done表示过去一定做过某事,是对过去发生情况的肯定推测,不合题意。
[考例2] Sir,you ______ be sitting in this waiting room. It is for women and children only.
(上海1996)
A. oughtnt to B. cant
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