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

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 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 英语翻译与其说她买的这件毛衣便宜不如说它漂亮.The sweater she bought was beautiful 为什么是Who bought a new car?而不是Who did buy a new car? who bought it 和 who did bought it 哪一个正确 she's one of the girls who bought the ticket. 1.can you show me the dress________you bought yesterday who The book who I bought yesterday is very interesting哪里错了 英文电影里的“谁说的"为什么是says who 这里用到了什么语法 为什么不直接用who says that who bought it?和who did buy it? Is it him\he who wants to see you 为什么这里用的是he而不是him? It must have been they who gave the signal.为什么是they而不是them呢?