should/ ought to have done sth 意为“本来应该干……,但未……” shouldn’t/ oughtn’t to + have done sth “本来不应该做……却做了” I wonder why she hasn’t written to us lately. We should have heard from her by now. I ought to have phoned Jack this...
to be+ed分词: The problem to be discussed tomorrow is a hard nut. 明天要讨论的问题很棘手。 to have been+ed分词: She is really pleased to have been given this opportunity. 她很高兴有这次机会。 综上可知,不定式不是只有“to do”这一种结构。由这一结构变...
2、They have done things they ought ___ A. not to do B. not to be done C. not to have done D. not having done 3、I' m sorry I couldn't get in touch with him before he left, I ___ him earlier. A. had a telephone B. have phoned C. should have...
1)Why do you want to study this course or subject? 你为什么想学习这门课程或科目? 2)How have your qualifications and studies helped you to prepare for this course or subject? 你的资格和学习如何帮助你准备这门课程或科目? 3)What else have you done to p...
I wish to live on the moon one day. 我希望有一天在月球上生活。 4. help to do sth. 帮助做某事 I often help to do some chores at home. 我在家经常帮着做家务。 5. hope to do sth. 希望做某事 I hope to have a good rest this weekend...
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