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>更新时间：2009-08-28 08:10:52 |
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会员通道1
会员通道2
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| 简 介 |
一、各个情态动词用法归纳
can和 could
1 . 表示“能力”
I can swim , but my sister can't.
2．表示“许可”、“请求”
Can I go with you ? (请求)
Father said I could go to cinema. (表示过去的许可)
You cannot smoke in the meeting room. (cannot 表示“禁止”)
Could I use your phone?Yes, of course you can.
肯定回答，不能用could ，一般是—Yes, please.— Thanks. need和dare用作情态动词时，主要用在否定句、疑问句中，用作实义动词时,可用于各种句式。
Need I come? Yes , you must./No,you needn’t.
You needn't telephone him now.
She dare not go out alone at night.
We should dare to give our own opinion.
We need to tell them the news.
注意：dare用作实义动词时，其否定句中的to可保留也可省略。
She doesn't dare to climb the tree.
She doesn't dare climb the tree.
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