非谓语题目

Question

----------many times ，the problems were setteled at last。
空格处要表示“已经被讨论了”，要怎么用？

Answer 1

Having been discussed for
having been done/having done 这个结构作为非谓语是要特别记忆的 它的含义是：前面的动作发生在后面额动作之前 具体这句话表示 先discuss 再settel 有逻辑上的先后 先讨论过之后才能解决问题

Answer 2

Having been discussed for many times ，the problems were setteled at last。
被讨论了很多次后，这些问题最终被解决了。追问

为什么用having，而不是have或者had?

追答

非谓语动词结构，表原因时，要用现在分词引导。
动词原形和过去式都不可以引导非谓语结构的（它们本身做谓语结构）。

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Answer 3

Having been discussed many times ，the problems were settled at last。

Answer 4

Discussed