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初中英语复习: 情态动词
作者:liziyin 来源:转载 更新时间:2009-06-22 点击数:1641
初中英语中情态动词的基本用法:
can, could
1. 表达“能力”。 2. 表示“许可”。 3. 有礼帽地提出“请求”。(用于疑问句)
4. 谈论“可能性”。 5. 当主语为事物时可以表示“惊异”。
We can use the computer now, but we couldn't two month ago.
You can go now.
Could you be here at eight o'clock tomorrow morning?
He can't be the manager, for I saw him go to
What on earth can this mean?
在表达“能力”时,可用 be able to 来取代 can。要注意的是:
可在 be able to 前加肋动词或情态动词以表达更多的时态或情态,
can 或 could 前则不可。
No one is able to do it. ( = No one can do it.)
We shall be able to finish the work next week.
I haven't been able to find any jobs.