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
例句:
I can drive a car, but I cannot drive a motorcycle.
我会开车,但我不会开摩托车。
I can’t go on Saturday, but I can go on Sunday.
我周六去不了,但我周日可以去。
[详细]