英语中"不用""不能""不要"中怎么表达?

不用 needn't, don't need

不能 can't, couldn't

不要 don't, shouldn't

如：
你不用说了 You needn't say anying. / You don't need to say any more.
你不能再说了 You can't say any more!
你不要再说了 Shut up, OK? (一般口语中这么说比较自然，而不用 you don't say more. 但不要的本意是 don't , shouldn't)

不用 [bù yòng]
need not
相关解释:
full into disuse
nonutility
come into disuse
desuetude
discredit
disuse
do without
Examples:
我们要是买不起汽车，也就只好不用（汽车）了。
If we can't afford a car, we'll just have to do without (one).
不用说，夏日的傍晚是多么美。
Needs not say how lovely are the summer evenings.
这条路线旅行的人以前常走，但是现在已不用了。
The route was once much travelled but has fallen into disuse.

不要 [bù yào]
don't! must not
Examples:
请不要嘲笑他。
Please don't laugh at him.
不要践踏草地。
Don't trample on the grass.
请不要责怪你自己。
Please don't blame yourself.

needn't
can't
不要就要看语境了，你说的可以讲stop saying 之类的

不用"no need to do sth.
"不能" must not do sth.
"不要: do not do sth.

直接用:stop