2. 职称英语
  3. The student asked her professor if he would have gone on the space ship he did k

The student asked her professor if he would have gone on the space ship he did k

游客2023-12-25  46
问题 The student asked her professor if he would have gone on the space ship he did know earlier.
选项 A、if he knew
B、if he knows
C、he had known
D、had he known
答案 D
解析 这个学生问她的教授，如果他早一点知道的话。他是否会登上宇宙飞船。句中的if表示“是否”，其后是省略了if的虚拟句；he would have gone on the space ship he did know earlier，根据语境，本句是对过去的虚拟，因此引导的虚拟条件句应使用过去完成时，若要省略if，则助动词需要提前，因此句子变成he would have gone on the space ship he did know earlier，因此D项正确。
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