不定式表过去除了序数词 名词 不定式时适用外，还在哪些情况是不定式表过去呢？如下面这个例子。Last...

不定式虽没有人称和数的变化，但所表示的动作具有时间先后顺序、主动、被动形式。
1.不定式的一般式表示的动作与谓语动词的动作同时发生或在其后发生：
Her decision seems to show a lack of political judgement.
I hope to see you next week.
2.不定式的进行时表示动作与谓语动词的动作同时发生：
Don't pretend to be working hard.Just do what you should.
He seems to be thinking deeply,without noticing me passing him.
3.不定式的的完成时表示的动作发生在谓语动词所表示的动作之前：
I'm sorry to have given you so much trouble.
4.不定式的被动语态的完成时表示的动作发在谓语动作之前：
The room seems to have been tidied up already.