Question

非谓语动词having been done,to have been done什么时候用?

Answer 1

在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词.非谓语动词分为三种形式:不定式,动名词,和分词(分词包括现在分词和过去分词).

1）不定式

时态语态 主动 被动

一般式 to do to be done

完成式 to have done to have been done

2）动名词

时态语态 主动 被动

一般式 doing being done

完成式 having done having been done

3）分词

时态语态 主动 被动

一般式 doing being done

完成式 having done having been done

否定形式：not +不定式,not + 动名词,not + 现在分词

All things having been canceled because of the snowstorm,many passengers could do nothing but take the train.

如果弄懂了上面的 表格,你的非谓语动词就算掌握90%了,如果还有不懂了,可以发信息给我.