初中 英语一般过去式讲解ppt.ppt

一般过去式讲解,引例：,(a-1)Iaminclasstoday.(a-2)Iwasinclassyesterday.(b-1)Helivesherenow.(b-2)Helivedheretenyearsago.(c-1)Myfriendsareathometoday.(c-2)Myfriendswereathomelastnight.,一般过去式的概念：,一般过去时表示过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为；过去主语所具备的能力和性格。,一般过去式的用法：,一般过去时常与表示过去的时间状语或从句连用a）时间状语Ago（twohoursago（一段时间+ago），yesterday（句子开头或结尾），thedaybeforeyesterday,lastweek,last(year,night,month)，具体时间（如Jan.fourth),justnow,attheageof,oneday,longago,onceuponatime（很久以前），andsoon,thismorning.longlongago.,b）动词变化规则规则变化1直接加ed：workworkedlooklookedplayplayed,2以e结尾的单词，直接加d：livelivedhopehopeduseused,3以辅音字母+y结尾的，变y为i加ed：studystudiedcarrycarriedworryworried,4以元音字母+y结尾的，直接加ed：enjoyenjoyedplayplayed5以重读闭音节结尾的，双写最后的辅音字母+ed：stopstoppedplanplanned,不规则变化：,make-made-mademay-mightmean-meant-meantmeet-met-metmust-mustpay-paid-paidput-put-putwrite-wrote-writtenwin-won-won,BE动词的过去式,单数：Iwasyouwere(一個人)shewashewasitwas复数：wewereyouwere(不只一人)theywere,一般过去式的构成形式,practise-1,一、用动词的适当形式填空1.He_(live)inAmericatwoyearsago.2.Theboy_(listen)totheteachercarefullylastweek.3.We_(watch)aJapanesecartoonlastFriday.4.Nancy_(pick)uporangesonthefarmlastweek.5.I_(pull)upcarrotwithMikeyesterday.6.They_(play)chessintheclassroomlastPElesson.7.Mymother_(cook)anicefoodlastSpringFestival.8.Thegirls_(dance)atthepartylastWednesday.9.Thestudents_(study)veryhardlastmonth.10.Myparents_(plan)tohaveagoodweekendlastThursday.,practise-2,二、句型转换:1.Theyplayedfootballintheplaygroundyesterday.否定句：_一般疑问句：_肯、否定回答：_划线部分提问：_2.LiuTaoskatedwithwithhiscousinlastWinterHoliday.否定句：_一般疑问句：_肯、否定回答：_划线部分提问：_3.Mybrothershowedhi