一、其表现形式如下(以do为例,蓝色属现在时态,黑色属过去时态
一般现在时:动词用原形或第三人称单数 does
一般过去时:动词用过去式 do
一般将来时:动词用will do 或 am/is/are going to do
过去将来时:动词用 would do 或 was/were going to do
现在进行时:动词用 am/is/are doing
过去进行时:动词用 was/were doing
现在完成时:动词用 have/has done
过去完成时:动词用 had done
二、常考易错点
1) 表时刻表的情况下,一般现在时代替将来时态用;
The plane takes off at 10p.m.
2) 主将从现 符合的原则是:if条件句,时间状语从句,方式状语从句和让步状语从句。如:
If he comes, I'll let you know.
He will be happy when I tell him.
Next time I'll do as you say.
Even if it rains tomorrow, the sports meet will take place.
3) be to do 表示有责任、有义务做某事
be about to do 表示正要做某事
I was about to leave when the telephone rang.
be going to do 表示有计划性、准备做某事
will do 一般情况下使用
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