你指的是for sb.to do sth.中的“to do"的时态吧?
一般情况下,这个动作如果发生在谓语动词之前,就用to have done;r如果同时发生就用to be doing,;假如发生在谓语动作之后,就用to do
例如：
He pretended to be sleeping
He pretended to leave the house alone.
He pretended to have finished his work.
for后面的人称代词后面的动词用什么时态
你指的是for sb.to do sth.中的“to do"的时态吧?
一般情况下,这个动作如果发生在谓语动词之前,就用to have done;r如果同时发生就用to be doing,;假如发生在谓语动作之后,就用to do
例如：
He pretended to be sleeping
He pretended to leave the house alone.
He pretended to have finished his work.