题目

——关于过去分词
1.Unless__invited____ to speak,you should remain silent at the conference.
为什么用invited而不用.being invited?
2.Being tired,i did not go to work.
为什么用Being tired而不用tired?
3.I went home,tired.
为什么用tired而不用being tired.
请解释什么情况下用invited什么情况下用being invited以及tired,being tired.
并且说明他们各自是怎么变化而来的.

提问时间：2020-09-28

答案

1.这是一个省略句,完整是Unless you are invited to speak,----用invited表示被动语态“被邀请”,主语加be动词可省略,而being invited 是进行时的被动语态,与题目要求时态不符.2.being tired同样是一个省略句,I'm ti...