Question

There was a danger that when the wave()off the other side,it would send the dish plunging

into the water again
A.was rebounding B.has rebounded C.rebounded D.would rebound
选哪个请解释

Answer 1

There was a danger that when the wave (  rebounded  ) off the other side, it would send the dish plunging into the water again.

There was a danger that the wave (  would rebound  ) off the other side and send the dish plunging into the water again.

注意两个句子的区别和填词的变化。

两个句子中that引导的都是a danger 的同位语从句。

只不过第一个是同位语从句中复合从句，在复合从句中when引导的时间状语从句，从句用一般过去时did，后面主句用would do，过去将来时。（对应的语法点是：时间状语从句中，主句用将来时，从句用一般现在时。//主句通用过去将来时，从句用一般过去时。）

第二个句子。就是一个同位语从句，两个谓语动词公用一个would，and后面的send实际也是would send，避免重复，省略表达。

Answer 2

您好，本题答案是c rebounded。
分析:句中含有when引导的时间状语从句，该从句用一般过去时，其对应主句（it would…water）用过去将来时态（would send）。