剑桥少儿英语二级上unit12下.ppt

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1、Unit12Hasyourschoolgotaswimmingpool?present(now)futurepast现在完成时(presentperfecttense)表示到现在为止已经完成或刚刚完成的动作。现在完成时have/has+过去分词句子结构过去分词的构成——规则1.直接加-ed。如：play-played2.以字母e结尾的直接加d。如：name-named3.以辅音字母加y结尾的，变y为i加ed。如：carry-carried4.重读闭音节且末尾只有一个辅音字母，双写这个辅音字母再加-ed。如：stop-stopped（1）与动词的原型，过去式一致，即AA

2、A型如：过去分词的构成——不规则原形过去式过去分词hithithitputputputhurthurthurt（2）与动词的过去式一致，即ABB型过去分词的构成——不规则原形过去式过去分词havehadhadsitsatsatsaysaidsaidsleepsleptsleptspellspeltspeltlearnlearntlearnt（3）与动词的原型，过去式都不一致，即ABC型过去分词的构成——不规则beginbeganbegunsingsangsungdrinkdrankdrunkswimswamswumspeakspokespokenchoosechose

3、chosenknowknewknownforgetforgotforgottenbreakbrokebrokendrivedrovedrivengivegavegiveneatateeatenwritewrotewrittenABCseesawseengowentgonetaketooktakenrideroderiddenwakewokewakengrowgrewgrowndrawdrewdrawnhidehidhiddenABC现在完成时Presentperfect句型现在完成时的肯定句式是“have（has）＋过去分词”。注意：该句式中的have或has是助动词

4、，has用于第三人称单数，其它人称一律用have。1.肯定句否定句：现在完成时Presentperfect句型havenot(haven’t)+过去分词hasnot(hasn’t)+过去分词Ihavenot(haven’t)seenthefilm.Shehasnot(hasn’t)seenthefilm.Ihaven’teatensupper.eat-eatenHehasn’tchangedhisidea.change-changedMymotherhasn’tcomebackhome.come-come一般疑问句：现在完成时Presentperfect句型现在完成时

5、的一般疑问句式是把助动词have或has提到主语之前。肯定回答Yes，_______have/has.否定回答：“No，_______haven’t（hasn’t）．”Haveyoueatenyourbreakfast?HaveyouknownSandyforalongtime?Yes,Ihave/No,Ihaven’t.Hassheeatenanythingsince9:00a.m.Haveyoueverseenatiger?Haveyoueverflownakite?Haveyoueverhadadog?Nowturntopage69andfinishpart3Y

6、es,Ihave.No,Ihaven’t.(1)根据图片。造现在完成时的一般疑问句。（2）根据图片，写出现在完成时的肯定句。Hasyourschoolgota__________?Yes,ithas./No,ithasn’t.lakeliberaryComputerroomHasyourfamilygota_______?Yes,ithas./No.ithasn’t.现在完成时Presentperfect句型特殊疑问句：特殊疑问词+have/has+过去分词+其他Whohascookedthedinner?WherehasSusanlearnedEnglish?Pai

7、rworkNowturntopage71andfinishpart6Maryhasgotsomeholidayphotos.Wheredoyouthinkshehasbeen?hasbeento意思是“到过，去过”，表示曾经到过某处，但现在人不在那儿。BigBenHehasbeentoWherehashebeen?LondonEyeShehasbeentoWherehasshebeen?LondonBridgeHehasbeentoWherehashebeen?RiverThamesShehasbeentoWherehasshebeen?Cambri