What does this word mean?可以讲下这种类似的用法吗?就是助动词的?为什么有些疑问句要用do 不用is

问题描述:

What does this word mean?可以讲下这种类似的用法吗?就是助动词的?为什么有些疑问句要用do 不用is

what is the meaning of this word?
mean是动词,当然用助动词。

do是用在修饰动词的疑问句里,句型为:疑问词+do/does/did+名词+动词原型,例句:what did you eat last night?
am,is,are之类的be动词是用在
1、修饰名词和形容词的疑问句里,句型为:疑问词+am,is,are+名词,例句:when is your birthday?2、现在进行时和过去进行时的疑问句里,例如:what are you doing?
如果讲的不明白,可以继续帮你解答 ^ ^.