题目

英语一般过去式 was were 后面加动词时用什么时态?还有被动语态什么形式,急
I was play tennis 还是 I was played tennis 我以前打网球
The program was started by Chinese young pioneers,这个是被动语态吗?是过去式被动语态吗?
She would return to the area after finishing her studies,为什么finish要加ing啊?
麻烦解释清楚点,谢谢啦(ˇˍˇ）

提问时间：2020-05-07

答案

was /were 后面加动词时 只能加doing 或done
加doing 表示过去进行时；加done 表示被动语态.如：
I was playing tennis at this time yesterday.昨天这个时候我正在打网球.
I was laughed at by my classmates.我被同学嘲笑了.
所以表达“我以前打网球”应该是：
I played tennis.或：I used to play tennis.
第二句话是被动语态,也是过去时的被动语态.
被动语态主结构是“be +done” 其中的be 随着时态的要求而改变.
after doing sth.中的after 在这里是介词,介词后的动词都需要加ing ,因为“介宾”的需要.介词后边要接名词或相当于名词的词作这个介词的宾语,动词加ing 就是把动词给名词化了.如：
I am good at drawing pictures.
Thanks for helping me.