问题
选择题
—I didn’t tell him the news.
—Oh, you ought _______.
A.to
B.not to
C.not to have
D.to have
答案
答案:D
本题考查情态动词的用法。此处表示“过去你应该告诉他这消息,可你没告诉他。” ought not to have done “过去本不该做某事却做了。” ought to have done 意为本来应做但实际没有做。简略答语中have不可省。