牛津译林2012版新7Bunit5grammar课件.ppt

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1、Unit5GrammarSimplepasttense一般过去时Whatdoesthesimplepasttenseexpress?这个时态表达了什么样的概念？过去的情况或状态.过去发生的动作.过去的情况或状态Heis10yearsoldthisyear.Hewas9yearsoldlastyear.2.Iamajuniorstudentnow.Iwasaprimarystudenttwoyearsago.3.Theyareintheclassroomatthemoment.Theywereinther

2、eadingroomjustnow.lastyear?Watchandtalk观察讨论Heis10yearsoldthisyear.Hewas9yearsoldlastyear.2.Iamajuniorstudentnow.Iwasaprimarystudenttwoyearsago.3.Theyareintheclassroomatthemoment.Theywereinthereadingroomjustnow.thisyearlastyearnowtwoyearsagoatthemomentjus

3、tnowis–wasam–wasare–were结论：一般过去时中，am,is,要改为was;are要改为were.过去发生的动作Iworkinacarfactorynow.-ButIworkedinasupermarkettwomonthsago.时间变化now---twomonthsago动词变化work---worked规则1：Mostverbs-词尾加上“ed”,变为动词过去式.变化规则？start---startedremember---rememberedclean---cleaned2.T

4、heyliveinYangzhouatthemoment.-ButtheylivedinShanghailastyear.时间变化atthemoment---lastyear动词变化live---lived规则2：Verbsendingin-e,直接加上“d”,变为动词过去式.like---likeduse---usedmove---moved3.HestudiesinNo.1MiddleSchoolthisterm.-ButhestudiedinNo.2MiddleSchoollastterm.时间变

5、化thisterm--lastterm动词变化study---studied规则3：Verbsendinginaconsonant+y,变“y”为“i”,加“ed”,变为动词过去式.try---triedcarry---carried---playedplay?4.Iusuallystopmycarinthegarden.-ButIstoppeditoutsidethegardenyesterday.时间变化usually--yesterday动词变化stop---stopped规则4：Shortver

6、bsendinginavowel+aconsonant双写词尾，加“ed”,变为动词过去式.jog---joggedplan---planned5.Usuallyittakesmeonehourtodomyhomework.-Butittookmetwohourslastnight.时间变化usually—lastnight动词变化take---took规则5：Irregularverbs不规则变化，见不规则动词表。Nochangecost→costput→putChangethevowelwrite→

7、wroteknow→knewChangetheconsonantmake→madespend→spentChangethevowel(s)andtheconsonant(s)leave→leftteach→taughtothersis→wasam→wasare→werehave→hadlet→letcut→cutcome→cameswim→swambuild→builtlend→lentsell→soldbuy→boughtMostverbsVerbsendingin-eVerbsendinginaco

8、nsonant+yShortverbsendinginavowel+aconsonantIrregularverbs+ed+d-y+ieddoubletheconsonant+edstart---startedclean---cleanedlike---likeduse---usedmove---movedtry---triedcarry---carriedcry---criedjog---joggedplan---plannedPage1