1. 过去完成时:
过去完成时表示“过去时点之前”发生的动作或情况
(过去的过去)
结构:haddone
He suddenly remembered that he had notlockedthe door.
When I woke up, it had alreadystoppedraining.
注意:SAT题目中,如果根据文章可以判定出某个动作发生在过去的过去,则应该使用过去完成时;否则,则应该使用一般过去时。
2. 现在完成时:
现在完成时表示“现在时点之前”发生的动作或情况
结构:has/have+ done
DaiyuLin has been ill for three days.
Weiweihas done a lot of work for herstudents.
完成时标志词:
already, by far, till now, for twoyears,since …, recently
in/over/during thepast/last…days/weeks/months/years
当句子中出现了以上时,一般要使用完成时
3. 一般现在时:
一般现在时经常被用于:
Ø经常性或习惯性动作:We often play footballthere.Ø现在的特征或状态:He loves rap music.Ø普遍真理或一般规律:Light travels faster than sound.
4. 现在进行时:
现在进行时主要用于表示:
Ø现在正在进行的动作
I am talking with myparents.
Who are you waiting for?
Ø计划想要进行的动作
We are leaving on Friday.
Are you going anywheretomorrow?
Ø表达一种感情(赞叹、厌烦等)
He is always thinking ofhelping others.
He is always breaking his words.
5. 一般过去时:
一般过去时主要表示过去某时发生的动作或情况
What did Xiao Baisay last night?
过去时标志词:
once, in 1980, yesterday, last week, twoyearsago, when …
当句子中出现了以上时,一般要使用过去时
6. 一般将来时:
一般将来时用于表示将来某时可能会发生的动作或情况
The agreement will come into forcenextmorning.
其他表示“将来”意思的用法:
übegoing to do: I am going to visit my Mathteacher.übeto do: The new train line is to beopened nextweek.ü一般现在时:Theplanleaves at six. (仅限某些动词)ü现在进行时:We areleaving on Friday.(仅限某些动词)