一：时态：所谓的"时态"，就是时间+状态。
谓语动词的时态见下表：
1．主动形式
|
|
过去
|
现在
|
将来
|
过去将来
|
|
一般
|
did
|
do
|
will/shall do
|
should/would do
|
|
进行
|
was/were doing
|
am/is/are doing
|
will/shall be doing
|
/
|
|
完成
|
had done
|
have/has done
|
will/shall have done
|
should/would have done用于虚拟语气
|
|
完成进行
|
had been doing
|
have/has been doing
|
/
|
/
|
|
|
过去
|
现在
|
将来
|
过去将来
|
|
一般
|
was/were given
|
am/is/are given
|
will/shall be given
|
should/would be given
|
|
进行
|
was/were being given
|
am/is/are being given
|
/
|
/
|
|
完成
|
had been given
|
have/has been given
|
will/shall have been given
|
should/would have been given
|
|
完成进行
|
/
|
/
|
/
|
|
CET-4 常考的三种时态：过去完成时；将来完成时；（现在/过去）完成进行时。
时间状语从句当中的时态：
一般过去时 所有的过去
用 一般现在时 表示 现在和将来
现在完成时 现在完成和将来完成
