be no good

• 一点儿都不好

be no good的用法和样例：

例句

1. Mary hardened her heart. It was no good being kind to Miss Jerome.
   玛丽硬起了心肠，因为对杰罗姆小姐心软是没有好处的。
2. If there were no bad people, there would be no good lawyer.
   假如没有坏人，就不会有好律师。