who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy?

为什么是Who bought a new car?而不是Who did buy a new car? 为什么是Who bought a new car?而不是Who did buy a new car? who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy? Who bought you thiis new football?--My father__.A.dose B.do C.did D.done 英语talent加油!根据首字母填空Look!some farmers are b____their new houses.同义句转换Let's have a look at this lovely baby.Let's ____ ____ this lovely baby.翻译句子昨天我买了一辆新车,明明也买了一辆.I bought a new bik He wanted to bought a new book. My mother bought a new b_____ suit He bought a new car是什么时态 cool just bought a brand new The new mobile ____he bought last week is called iphone 4 .It's expensive .A what B who C which D when答案是C 为什么? Tom has bought a new computer.She has bought a new one,tooTom has bought a new computer.______ ________ ________改为同义句 Bill bought a new pen.Mike bought a new one,too (改为同义句) Bill bought a new pen.______ ______ I ( )a new dictionary.It is very useful.A.bought B.have bought 翻译Who bought that new house down the street from you? my brother bought a new kite 一般疑问句 My mother bought a new dress ____ me My brother bought a new lite.一般疑问句 Father bought me a new bike 改为同义句