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1、初三英语现在完成时知识精讲一.本周教学内容：现在完成时构成：肯定式：主语+have/has+过去分词否定式：主语+haven’t/hasn’t+过去分词疑问式：have/has+主语+过去分词肯定回答：yes,主语+have/has否定回答：no,主语+haven’t/hasn’t常用副词：just,already,yet,ever,neverTomhasjusthadashower.Katehasalreadyhadashower.Jackhasn’thadashoweryet.Haveyouhadashoweryet?Haveyoueverusedacomputer?No,Iha
2、ven’t.Ihaveneverusedone.It’sthemostbeautifulbuildingI’veeverseen.Ihavenevermetakindman.时间状语：since,forsince+时间点：单词：Tuesday,2000短语：eleveno’clock,twodaysago,lastyear句子：thedaytheygotmarriedfor+时间段（fiveminutes,anhour,threedays,severalweeks,sixmonths,ayear,alongtime）IhavebeeninGradeNineforaboutayear.
3、HehaslivedinCanadasince1998.HowlonghaveyoubeeninGradeNine?HowlonghashelivedinCanada?have(has)beento“曾经去过某地”，表示现在已经不在那里了。have(has)goneto“到某地去了”，表示到了某地或正在去某地的途中。1.I’ve____toBeijingthreetimes.2.WhereisTom?Hehas____tothebookshop.非延续性动词不能和since,for连用，要换成相应的延续性动词。come→becometo→bein/atleave→beawaybegi
4、n/start→beonstop→beoverborrow→keepopen→beopenclose→beclosedjoin→beanumberof/indie→bedeadbecome→befallill→beillbuy→havegoout→beoutgettoknow→knowmarry→bemarriedend/finish→beover练习：按要求转换下列各句1.Hehasfoundnothingintheroom.（改为一般疑问句）_____hefound____intheroom?2.Ihavealreadyfinishedthework.（改为否定句）I_____f
5、inishedthework_____.3.Shehasgotanotebook.（对划线部分提问）__________shegot?4.They’veneverlearnedJapanese,________?（反意疑问句）5.Shehaskeptthebook[sincelastmonth].（括号部分提问）________hasshekeptthebook?形容词比较级的用法1.as+原级+asnotas/so+原级+asYouareastallasI.Heisn’tascleverasTom.2.比较级+thanYouaretwoyearsolderthanI.Whichco
6、ntinentislarger,AfricaorAsia?3.比较级+and+比较级Thewindisblowingharderandharder.4.the+比较级，the+比较级Thesooner，thebetter.5.much,alittle,even,still,alot,abitWhydon’tyoudoitalittleearlier?6.the+最高级TheYangtzeRiveristhelongestriverinChina.Whichisthelargest,thesun,theearth,orthemoon?练习：（一）把下列句子变成现在完成时1.LiLeij
7、oinedthearmytwoyearsago.2.Theyborrowedthebookslastweek.3.Wegottoknoweachothertenyearsago.4.Ibecameastudentnineyearsago.5.Thefilmbeganfiveminutesago.（二）汉译英1.我母亲和她母亲一样苍老。2.我想你不如我跑得快。3.他越来越认真了。4.俄语比英语难得多。5.蜜蜂，蝴蝶和蚊子，哪个最小？（答题时间：15分钟）I.
