There are many tiny things we cannot even see that are alive.that are alive做什么句子成分
问题描述：
There are many tiny things we cannot even see that are alive.that are alive做什么句子成分
答
做定语修饰tiny things这个句子中有两个定语从句吗？可以这么理解。这句也可写成There are many tiny things that we cannot even see that are alive.可以看出是两个定从。