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2) 表示请求和允许。
• -----Can I go now?
• ----- Yes, you can. / No, you can’t. 此 时可与may互换。在疑问句中还可用 could, might代替,不是过去式,只是语 气更委婉,不能用于肯定句和答语中。
---- Could I come to see you tomorrow? ---- Yes, you can. ( No, I’m afraid not. )
Someone is knocking at the door, and who can it be?
It can’t be Tom because he has gone to
Beijing.
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四、 shall
1) shall 用于第一人称,征求对方的意见。 What shall we do this evening?
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2)表示请求、建议或征求对方意见时, 用Would you…? 比用Will you…?更婉转。
如:
• Will/Would you please keep the door open?请让门开着好吗?
• Will/Would you go with me?你愿意和 我一起去吗?
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• Did anyone dare (to) admit it?有人敢 于承认吗?
He did not dare (to) leave his car there. 他不敢把车停放在那里。
If he dares to show up at her house I’ll be surprised. 如果他敢出现 在她的房子里,我会感到吃惊。