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 notExamples: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.
學僧Young
