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(单词翻译:双击或拖选)
1.can / cannot
两者区别主要在是否重读上
can + v. 重音在verb.上 /kэn/ --------------可以，能够
cannot + v.重音在cannot上 /`kжnat/ ----------不可以，不能够
I can drive a car, but I cannot drive a motorcycle.
I can’t go on Saturday, but I can go on Sunday.
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