When did he buy the house?He____[buy] it last year.谁能帮我做上面这道题啊?

when did he buy the car 和when he bought the car 怎么区别在哪 When did he buy the house?He____[buy] it last year.谁能帮我做上面这道题啊? when did he buy the computer ______ ______ has he _______ the computer when did he buy his new coat?翻译 Tom did not buy the bike()did not he?did he?does he?do he? 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 Why didn't he buy the ball?同义改写 （ ）did he buy the ball ( When did he invent the telephone?变被动语态 When did he clean the window?怎样改为被动语态 what did man see when he walked by the lake? 把下列句子改为被动语态.1.He often plays football.2.Did he buy the apples?3.I can't finish the work.4.I will give him a new pen.5.When do people often plant tress? When I called Mike,he was listing the things he wanted to buy.的中文意思? when did your father buy you the mobile phone 换为被动语态 when（ ）the mobile phone when（ ）you?when （ ）you 是隔开的,要两句 Did he buy you the book you wanted?改为被动__________________you__________ 求翻译the man did not buy a digital tv until he had saved enough money When did he graduate( )college tom always loves ships.when he was young完形填空Tom always loves ships.When he was young,he said,___(1) going to the army.But his eyes were not very good,___(2) he did not get in.Then he said,I'm going to buy a small ___(3),and I'm going to go 24.Jack,could you tall me__?Sure.In the post office on Green Road.A.where you bought the stamps B.where did you buy the stamps C.when you bought the stamps D.when did you buy the stamps