为什么是when did he arrived?不是when was he arrived给出例句,将清语法要点

为什么是when did he arrived?不是when was he arrived给出例句,将清语法要点 Only when Tom fully recovered did he go back to work这里的“did he go ”倒装我知道 为什么是一般过去时? 为什么是“Can you tell me when he bought the car而不是Can you tell me when did he buy the car he asked me when did i graduate为什么是错误的?应该填he asked me when i graduate不是要改成陈述吗 -When did he start his own business?-_____in 1998______he graduated from his senior high school.答案为什么是 It was when这难道不是强调句吗 When did he graduate( )college _____ with his slippers on when he heard the terrible noise.A.Rushed he out B.Out he rushed C.Out rushed he D.Out did he rush答案为什么是B?什么时候完全倒装,什么时候部分倒装? when did play 为什么是被动语态when was the play founded was能不能改为did founded是什么 Never before did he work harder请翻译一下首先翻译一下,然后讲解一下这道题,为什么是did he 句子“He could catch him, but he doesn't. ”中为什么是does而不是did he drives much (care)___than he did 3 years ago.空里为什么是more carefully He said that he ____(ring) me up when he got there为什么是would ring? when did he come home 对么 怎样用when did you she/he 造句 When did he fall ill?译成汉语 when did he ___(go/went)? when did he move to another city ?do you know?（合并为一句 I don't know .when did he go there yesterday?合并为一句