1 Kids are always very curious about what is around them.
这是复合句 主系表结构
Kids 是主语are 是系动词 always是状语 very curious是表语
about what is around them.是 介词短语 作状语
其中 about是介词 what is around them是名词性从句作介词宾语 是宾语从句
其中what是连接代词 引导宾语从句 并作从句中的主语 is是从句中的系动词around them是从句中的表语
也可以 简单划分为Kids 是主语are always very curious about是谓语 what is around them是宾语
2 .Kids are always very curious about all the things around them
这是一个简单句 主系表结构
Kids是主语 are 是系动词always 是状语very curious 是表语
about all the things around them是介词短语作状语
其中 about是介词all the things 是介词宾语 around them是介词短语作定语修饰all the things
最后一个very和quite 都是副词 作状语 修饰形容词 curious