Take whatever you want.
句型结构：省略的主语（You)+谓语+宾语结构
谓语是take,宾语是由whatever引导的宾语从句whatever you want
从句中,whatever是want的宾语
I come specially to see you.
句型结构:主语+谓语
主语I 谓语come
specially副词作状语,to see you为表示目的的不定式,可以看做状语
Take whatever you want.
句型结构：省略的主语（You)+谓语+宾语结构
谓语是take,宾语是由whatever引导的宾语从句whatever you want
从句中,whatever是want的宾语
I come specially to see you.
句型结构:主语+谓语
主语I 谓语come
specially副词作状语,to see you为表示目的的不定式,可以看做状语