这里为什么要有do呢?How do you know?

这里为什么要有do呢?How do you know? how do yo do的回答是什么? sure ,how much do yo need?翻译 sure .how mch do yo need? 求教how do yo like Beijing?这句话和 do yo like Beijing? Do you live in a city?Do yo know [ ]? A.how did cities begin B how begin cities C.how cities begin请说为什么,谢谢 改错How do yo go to school everyday 英语语法,高手HELP HELP~!1 He is ____much of a gentleman to fight.A so B as C very D too(为什么这里不选A,要选D呢?翻译为如此多,不可以吗?) 2 How long ____?A you suppose did it last B do you suppose it lastedC did yo do yo have some what do you do with .等于how do you deal with 为什么呢? DO you have a basketball?这里为什么要有DO 做什么成分 为什么有一句话为‘‘How ofen do you exercise?’’而不是'How ofen do your exercise?'呢 i do make friends with my classmates为什么要有一个do,在这里do是神马含义? how do yo do的答句是什么?再者,这个是什么意思,急用啊…… how often do you have art festival in your school 这里为什么用how often i don't know how to do it为什么how后要有一个to 外国人为什么说 how do you do what to do how to do it我知道what后面不加it是应为what提前,充当了do的宾语可是为什么what to do with it这里的it一定要呢,是不是因为这里do的宾语不是what呢,望详解