more quietly,为什么不是quiet?

为什么说quiet 和quietly是反义词? 是keep quiet还是keep quietly 为什么 He becomes (quiet).为什么不用quietly?“becomes”在这里不是动词吗?动词后面应该加副词才 tou should keep_____(QUIET,QUIETLY)应该填什么,为什么? 英语more quietly Miss quietly in a quiet corner quietly forgotten Sit ____,please.是quiet还是quietly? quiet和quietly的用法区别 quiet和quietly有什么不同 quiet和quietly的区别在哪? play the piano接quiet还是quietly quiet副词是quiet和quietly 有什么区别