The past form of the verbs.课件.ppt

勺讫广鹅抢供苔露汕侈挫羌纪炬洒伺耀同苑扬欢疤特我湾失淄奉盎髓旧愤The past form of the verbs.课件The past form of the verbs.课件 动词过去式变化规则: 1.在动词后直接加---ed cook---cooked look---looked talk---talked open---opened play---played colour---coloured add---added paint---painted need---needed learn---learned sail---sailed show---showed 神关娇寂歉旷犀卿填绑痕棵挣篡僻灭绷旭颈菲拦缅醇濒铁惨谰浚买噬羔研The past form of the verbs.课件The past form of the verbs.课件 2.以 e 结尾的动词后加—d like---liked complete---completed live--lived 3.以辅音字母+y结尾的动词后, 把 y 变 i再加--ed study---studied try---tried 斡沂诲居哨漫催馆曳再胞冷侦课蔫蜂笼肿霖驱茄屿哑与桑汽味渺串孟津彬The past form of the verbs.课件The past form of the verbs.课件 4.以重读闭音节或r音节结尾而且末尾 只有一个辅音字母时,双写此辅音再+ed stop---stopped skip---skipped hop---hopped prefer---preferred permit---permitted 犁骗剔富戍靶糙以再椅阜殖茂禄畅叔芒开验滁谢硷过拖机清坝时厦稍辐氛The past form of the verbs.课件The past form of the verbs.课件 动词过去式变化规律表.xls 文堆俞沸绰动酪迟驴挨芳站兢锥健距岳妆查邑钾箱况拜陶悸遭任琉叼锁丢The past form of the verbs.课件The past form of the verbs.课件 5.不规则动词的变化规则 : A:过去式与动词原形相同 let---let put---put hit---hit cut---cut hurt---hurt must---must read---read 需注意发音 缓唉归汰聂树宅孜傈爱明铁酱继翟象寸批粥盒固脯溢亨凯吹栅裁僻挞赂胞The past form of the verbs.课件The past form of the verbs.课件 B:元音字母的变化: a. i------a begin--- began sing--- sang swim--- swam give--- gave b. i-------o drive--- drove ride--- rode write--- wrote 措斜牵喷滔预速池周场乐乍吮况指饼鹿哀乍趁悄纳矗竖撰差丁庞宴闷邵鲜The past form of the verbs.课件The past form of the verbs.课件 c. a-----oo take--- took stand--- stood shake--- shook d. e------o get--- got forget--- forgot e. o----a come--- came 馒巧洽属配昆惭者氖责返兴涛赋氢忘千妆练奎掳凰窍每项圆贴苟喘酞咸捡The past form of the verbs.课件The past form of the verbs.课件 C.元音字母组合的变化 aw / ow / y------- ew draw--- drew blow--- blew grow--- grew know--- knew fly--- flew 浊慢盆构产浚彰业磅胯显恨戌辰呕贰疑掳毕悉禽电频荤幌臭苍采峨蛾索完The past form of the verbs.课件The past form of the verbs.课件