[紧急求助]英语语法.被动语态中什么时候要加be动词,什么时候不用加be?要怎样判断?
问题描述：
[紧急求助]英语语法.被动语态中什么时候要加be动词,什么时候不用加be?要怎样判断?
答
都要加的,
A is/are (not) done (by B).
A is/are (not) going to be done (by B).
A will (not) be done (by B).
A has/have/had not been done by B.