专题八 │ 正面解读 情态动词 意义
例句
备注
can/could 允许 (有时可与may互换)
Can/May I have a look at your photos?
can与could、may与might不表时态差异,只是语气上的差别,could/might比can/may更委婉。注意在回答时不能用could/ might。
请求
—Can/Could you lend me a hand?—Yes, I can.
专题八 │ 正面解读 情态动词 意义
例句
备注
may/might 允许或请求
①You may take this if you like. ②May/Might I ask for a photo of your baby?
can与could、may与might不表时态差异,只是语气上的差别,could/might比can/may更委婉。注意在回答时不能用could/ might。
2.must, should
专题八 │ 正面解读 情态动词 意义
例句
备注
must
必须
①We must help each other to overcome the difficulties. ②—Must I finish the work today?—No, you needn't/you don't have to./Yes, you must. ③You mustn't take photos here, and it is forbidden.
①must表示主观意志,have to表示客观。如:They had to speed up, for the weather turned terrible. ②Must I/we…?的否定回答不能用mustn't。
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