All the plants grow well everywhere.It must often rain here,isn not it,为什么是isn,t而不是doesn,t
问题描述：
All the plants grow well everywhere.It must often rain here,isn not it,为什么是isn,t而不是doesn,t
答
系动词哪个is ,grow 好像也算是it often rains 不是does吗，加了个must就是is吗肯定不是啊！我是这样理解的：是描述这个地方的一种状态，而不是强调在下雨这个动作