teach和taught的区别跟用法?

teach和taught的区别跟用法? who taught和who did teach的区别 teach的中文和taught的中文 teach跟instruct的区别? taught和teach什么关系? who taught和who did teach有何区别him a few words of italian?The waiter.A.who taught B.who did teach ,one和that的用法跟区别 中文“和”跟“与”用法的区别 who taught和who did teach这是新概念二中一题,我不明白两者区别 teach的过去式是teached还是taught teach 的用法和结构是什么? 关于teach的用法和词组 teach you English和 teach yourself English 的区别RT teach sb.to do和teach sb.doing的区别 teach sb to sth和 teach sb sth的区别 teach 的用法 白水泥跟黑水泥的用法和区别 taught和teach,怎么区分?什么时候用taught什么时候用teach最好有例句，不过没有也没关系。急急急