bought和buy是什么关系

bought和buy是什么关系 was bought 和did buy.帮忙各造个句子. has bought 和 was bought的区别是什么?急 buy的过去式是不是bought? With many tings ( ),he went to the nearest shop.buy,而不是我认为的to be bought.可是在这个独立主格结构中，things是宾语，填的是宾语补足语，buy和things又是动宾关系，那为什么to be bought不对呢？ buy和sell有什么关系 when did he buy the car 和when he bought the car 怎么区别在哪 where have you bought it和where did you buy it有什么区别 have sth to buy 和have sth to be bought有什么区别 Have you bought a new bag 和Did you buy a new bag有什么区别 — I have bought an English-Chinese dictionary .— When and where _______ you _______ it ? A. do ; buy B. did ; buy C. have ; bought D. will ; buy B和C是不是都可以? she didn`t ____a souvenir.she ____ a bag 1.buy,buy 2.buy,bought 3.bought,buy 4.bought,bought bought什么意思? buy什么意思? 句子成分how many computers did you buy 和how many computers you bought问一下这两个句子的主语是什么?how many 作什么?how many computers 是主语还是you是主语?为什么第一句话不是陈述语序? I bought a used car和I buy a used car 区别在哪有人说因为有USED在。所以必须用过去式 bought 英语语法have bought是什么形式?既然是过去式,为什么不直接bought呢?have bought 和have bought 分别用在什么地方? buy的用法buy sth.to sb.和 buy sth.for sb.的区别是什么? You bought a book?是一般疑问句吗?不应是Did you buy a book?You bought a book?是一般疑问句吗?但一般疑问句不应是Did you buy a book?首句是什么情况?