ing分词的被动式

-ing分词的被动式表示它的逻辑主语是-ing分词动作的承受者。根据-ing分词动作发生的时间，-ing分词的被动式有一般被动式(being done)。如：

The question being discussed is very important. 正在被讨论的问题很重要。

They are talking about his having been criticizing by the teacher. 他们正在谈论他被老师批评的事。

Having been criticized by the teacher, he gave up smoking. 被老师批评以后，他把烟戒了。

注意：在need, want, require, be worth等动词（短语）后，作宾语的-ing 分词常用主动形式来表示被动含义。如：

Your shoes need cleaning. = Your shoes need to be cleaned. 你的鞋需要清洗一下了。