内容正文:
八大时态
1. 一般现在时的用法
1)表示经常性或习惯性的动作,常与表示频度的时间状语连用例: every…, sometimes, often, always, usually, twice a week, at…, on Sunday等。
I leave home for school at 7 every morning.
He watches TV once a week .
2)表示普遍真理,客观存在,科学事实。
The earth moves around the sun.
Shanghai lies in the east of China.
3)格言或警句。
Pride goes before a fall. 骄者必败。
注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。
例:Columbus proved that the earth is round..
4)表示现在时刻的状态、能力、个性或爱好。
I don't want so much.
Ann Wang writes good English but does not speak well.
比较:Now I put the sugar in the cup.
I am doing my homework now.
第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back.
第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时。
2. 一般过去时的用法
1)在确定的过去时间里所发生的动作或存在的状态。
时间状语有:yesterday, an hour ago, the other day, in 1982,yesterday morning (afternoon, evening…),last night (week, month, year…), a moment ago , a week ago, three years ago… just now,等。
Where did you go just now?
2)表示在过去一段时间内,经常性或习惯性的动作。
When I was a child