Do you know the girl colled Gina?为什么coll要+ed不是do后动词用原形吗?

Do you know the girl colled Gina?为什么coll要+ed不是do后动词用原形吗? Do you know where he lives?do did dose后面动词不是用原形吗?为什么要用lives加 Do you know where he went yesterday do后面不是要加动词原形吗,为什么went没有变 Do you know that后为什么是动词过去式,前面不是有do吗? Did you finish doing your homework中do为什么加ing,did后不是加动词原形吗 should不是加动词原形吗?为什么You should learn to do呢? do you know the girl with whom kate is talking 为什么连词要用whom 用 不是说一般现在词的动词要用原形吗?那为什么 How often do you go fishing?中的go fishi What can I do to help you,Tom?do 后接动词原形为什么用to help 请问All you do now is to complete the form .中的 do 为什么是动词原形 All you need to do is ask the question 为什么 is 后可直接加动词原形 why not do sth 等于why dont you do sth 为什么后面要加动词原形呢不是to do 呢 请