用What did your friend do yesterday提问要用过去式

your Did the what thing? What did your boss say to him 中为什么不用do而用did?如题. what did you do on your holiday What did you learn in your childhood? What did your grandma use to what did your give you for your birthday? 用What did your friend do yesterday提问要用过去式 what your parents or grangparents did when they were children请用英语回答 What did your family do yesterday?（用一般过去时态写）作文不少于8句话 What did you do on your weekend?回答是不是用过去 Did you give your teacher a hard time?If you____(do /did),what did you do? What did your boss say to him?是否等于Did your boss say to him? Alan：What did you do during your holiday What did you like or dislike about your previous job? What did your father do last night?怎么回答 What did your father do this morning?中文的意思 what did you do on your vacation,wy ming? you,what,holiday,did,do,on,your ) [连词成句].