where are they come from为什么不对?

来源:百度知道 编辑:UC知道 时间:2024/05/12 20:47:57
说他们来自那个国家为什么要用
where do they come from?

where are they come from 为什么不对?

do 和 are各在什么情况下用呀?

正确的说法是where do they come from?
where are you from?

之所以不能说 are they come from的原因是 are是be动词, 后面不能跟动词原形,因为be动词本身就是动词,做谓语,后面跟非谓语形式,例如不定式,动名词和过去分词。
do 是助动词,后面跟动词原形 , 例如 Do you have a pen? do后面加have。
are 是系动词,后面加动名词, 例如 what are you doing? are后加doing

当你回答这个问题时怎么回答?
They come from XXX
还是
They are come from XXX?