为什么用buy而不是bought
为什么用buy而不是bought
为什么i spent 5 yuan _this book.填buy,而不是to buy 或 bought?
为什么是Who bought a new car?而不是Who did buy a new car?
I went to the shop to buy some soubenirs.为什么不用bought而用to buy
buy/bought/bought/
为什么英语中定语从句用which to buy,而不是to buy which
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
Who bought the sweater?谁买了这件毛衣呢?在这里为什么用的是who bought而不是who di
新概念英语第二册第29课,为什么是Captain Ben Fawcett has bought而不是bought
buy怎么变成bought
是why did she buy the dress 还是用bought
bought和buy是什么关系