is being和are being的用法?还有being和been的用法,为何有时过去式还用being?

问题描述:

is being和are being的用法?
还有being和been的用法,为何有时过去式还用being?

is being和are being其实没多大区别,主要看主语是单数还是复数而已.being一般是用于现在时,been则是用于现在完成时或过去完成时你说过去时还用being,可能在being前面还有一个have/had或是was/were,表示在过去某个时...