(Do) you like chinese food.括号里为什么 不填 are,而用do?

do是助动词,帮助动词构成时态、疑问和否定的时候使用,和动词原形搭配.
eg I do not want to go swimming.
Do you usually get up at eight?
are（be）本身是判断动词,可以独立作系词,构成主系表句型.
eg Are you a boy?
be 和动词同时出现的情况有两种：
1） 构成进行时 They are watching TV
2) 构成被动语态 They are killed in the war.
be 和动词原形不能直接搭配使用.