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Suppose (that)...、supposing (that) ...和 what if... 都可以表示“假如...”。
他们后面都可以跟三种时态(一般现在时、一般过去时、过去完成时),但用法不一样,下面我们分别举例论述,请仔细体会例句:
1. Suppose、supposing 和 what if + 一般现在时
表示对未来可能发生的事情提出建议。
例如:
1)Suppose we stop for a break now?
我们现在歇一会儿怎么样?
2)Supposing you fail in the exam – what will you do then?
假设你考试不及格 - 那该怎么办?
3)What if you don’t pass your exams?
你要是考试不及格怎么办?
2. Suppose、supposing 和 what if + 一般过去时
表示更不确定某事在未来是否可能发生。
例如:
1)Suppose I asked David to lend me money? Do you think he’d do it?
如果我求大卫借我钱,你想他会做吗?
*没有 Suppose I ask David to lend me money? 来得确定。
2)Supposing you won the lottery, what would you do with the money?
假如你中了乐透,你会怎样花那笔钱?
*没有 Supposing you win the lottery… 来得确定。
3)What if the boss saw us slack?
如果老板看到我们摸鱼该怎么办?
*没有 What if the boss sees us slack? 来得确定。
3. Suppose、supposing 和 what if + 过去完成式
表示与过去事实相反,实际上该事件并未发生。
例如:
1)Suppose I had gone to Shanghai?
如果我跟你去上海了会怎么样?
*事实上,我没去上海。
2)Supposing Cathy had broken up with her boyfriend. Would that have been a good idea?
如果凯西跟她男友分手,那会是个好主意吗?
*事实上凯西没有跟她男友分手。
3)What if you’d decided to move to the United States. What city would you like to choose?
如果你决定搬到美国,你会选择哪个城市?
*事实上,你并没有决定搬到美国。
got it? 这是个小难点,大家可以收藏起来,反复学习掌握。