iswasareweredodidbuyboughtgowenteatatehavehadrunranmeetmetloselost原形过去式原形过去式learnt学习(过去式)learn学习(原形)this这个(单数)[ðɪs]Theyaresingers.dancedancerdrivedriverteachteacherfarmfarmersingsinger教室1.DidLingling’sgrandmalearnEnglish?2.What’sLingling’sgrandpadoingnow?Yes,shelearntEnglish.He’slearningEnglishnow.Therebemanyyearsagonowwaswere否+n’twasn’tweren’tisare否+n’tisn’taren’tWhatdidshedoyesterday?madeacakeboughtabookateanicecreamwenttothezoowatchedTVdidherhomework1.WhatdidMrLidotenyearsago?2.WhatdoMrLidonow?HetaughtChinese.Heisretired.TenyearsagoNowMrLiwasateacher.HetaughtChinese.teach教ChenHaiwasinhisclass.Hewasagoodpupil(小学生)Hestudiedveryhard.study学习MrLiisretired.He’slearningEnglish.Heislearning.他正在学习.ChenHaiisanEnglishteacher.He’steachingMrLi.Heisteaching.他正在教.