He did invent the lightning conductor中为什么用do+动原,是什么语法?
He did invent the lightning conductor中为什么用do+动原,是什么语法?
He invented the lightning conductor,which protects ships fro
When did he invent the telephone?变被动语态
1.When did you invent the strange machine 2.Where do people
How much did the computer cost ben?这句话中为什么要用did不用do?
This is the way that he did things中that作什么成分啊?这是什么语法用法?
did you like the film?句子中为什么要用did,而不是do.与do you like the fil
when did they invent the personal comp
he runs as quickly as i do后面的i do是什么语法,为什么要这样用?
When did they invent the personal computer.用被动语态改写
在Where do you think he lives?中为什么think和he间不加does或did?
The doctor did what he could do for the dying man .有一处错误,是什么