Unit8第2課時(shí)語(yǔ)法精講-八年級(jí)英語(yǔ)下冊(cè)課堂（人教版）（含音頻）

第二課時(shí)

語(yǔ)法篇：現(xiàn)在完成時(shí)PPT部分圖片來(lái)源于網(wǎng)絡(luò)。Unit8 HaveyoureadTreasureIslandyet？現(xiàn)在完成時(shí)：定義和肯定句現(xiàn)在完成時(shí)：一般疑問(wèn)句目標(biāo)現(xiàn)在完成時(shí)：時(shí)間標(biāo)志詞現(xiàn)在完成時(shí)：動(dòng)詞過(guò)去分詞的規(guī)則變化現(xiàn)在完成時(shí)：四大句式常用的動(dòng)詞的過(guò)去分詞GrammarGrammarOne現(xiàn)在完成時(shí)：定義和肯定句【觀察】結(jié)構(gòu)：注意：1.have后跟一個(gè)動(dòng)詞的過(guò)去分詞；

2.主語(yǔ)是三單用has，再跟動(dòng)詞過(guò)去分詞；3.have可以縮寫(xiě)為’ve。1.從定義上簡(jiǎn)單來(lái)講，事情要做一段時(shí)間，還沒(méi)有做完，持續(xù)到現(xiàn)在；2.過(guò)去分詞有規(guī)則和不規(guī)則之分，加ed是規(guī)則變化，沒(méi)有ed是不規(guī)則變化?！驹洹縄’vealreadyfinishedreadingit.【例句】1.Wehavekeptthesebooksfortwodays.2.They’vejustseenthisfilmfor10minutes.3.ShehaswatchedTVforhalfanhour.定義：從過(guò)去某個(gè)時(shí)間持續(xù)到現(xiàn)在?？隙ň洌褐髡Z(yǔ)

+have+動(dòng)詞過(guò)去分詞+for+其他。1個(gè)1分?！緦?xiě)出下列原形】1.eaten-_______2.kept-_______3.seen-________4.watched-________eatkeepseewatch現(xiàn)在完成時(shí)：一般疑問(wèn)句GrammarTwoHaveyoureadTreasureIslandyet？Hassheevermovedhouse?助動(dòng)詞Have/Has+主語(yǔ)+動(dòng)詞過(guò)去分詞done+賓語(yǔ)Have/has+主語(yǔ)+done...?Yes,主+have/has.謂賓主Hasthetownchangedalotovertheyears?多年來(lái)小鎮(zhèn)發(fā)生很大的改變嗎？Haveyoueatenthewatermelon?Yes,Ihave.No,Ihaven’t.sheHasshehas.shehasn’t.No,主+haven’t/hasn’t.012345678910判斷句子對(duì)錯(cuò)?，F(xiàn)在完成時(shí)表示過(guò)去持續(xù)到現(xiàn)在的動(dòng)作。RoundOneGrammar012345678910Grammar判斷句子對(duì)錯(cuò)?，F(xiàn)在完成時(shí)一般疑問(wèn)句只需要把have/has和主語(yǔ)交換位置

。GrammarThree現(xiàn)在完成時(shí)：時(shí)間標(biāo)志詞Hasthetownchangedalotovertheyears?We'velivedinthisareasincethen.l'velivedheresinceIwasborn.l'vejust

eatenit.Haveyouevermovedhouse?just,

ever,since,sincethen,overtheyears,before,yet,recently

（一般疑問(wèn)句）（否定句）justnow用于一般過(guò)去時(shí)現(xiàn)在完成時(shí)：動(dòng)詞過(guò)去分詞規(guī)則變化GrammarFour大部分動(dòng)詞+edfinished以e結(jié)尾的動(dòng)詞+dchange以y結(jié)尾的動(dòng)詞把y改為i+edcarry以重讀閉音節(jié)結(jié)尾的動(dòng)詞雙寫(xiě)最后一個(gè)字母+edstopd不規(guī)則變化AAA型hit-hit-hitAAB型beat-beat-beatenABA型come-came-comeABB型spend-spent-spentABC型do-did-doneiedped012345678910判斷句子對(duì)錯(cuò)。justnow和just都用于現(xiàn)在完成時(shí)。RoundTwoGrammar012345678910判斷句子對(duì)錯(cuò)。不規(guī)則變化中有的動(dòng)詞過(guò)去式和過(guò)去分詞與原形一樣。GrammarGrammarFive現(xiàn)在完成時(shí)：四大句式Ihavearrived.Ihavenotarrived.肯定句：主語(yǔ)+have/hasdone+...Yes,you+have/has.HaveIarrived?No,you+haven’t/hasn’t.否定句：主語(yǔ)+haven’t/hasn’tdone+...一般疑問(wèn)句：Have/Has+主語(yǔ)+done+...？Yes,主+have/has.No,主+haven’t/hasn’t.havenot=haven’thasnot=hasn’tWhathaveyoudone?特殊疑問(wèn)句：Whathave/has+主語(yǔ)+done+...?GrammarOne常用的動(dòng)詞的過(guò)去分詞do-did-donego-went-gonecome-came-comebuy-bought-boughtfeel-felt-feltfind-found-foundtake-took-takengive-gave-givenhave-had-hadhear-heard-heardkeep-kept-keptmake-made-madesay-said-saidtell-told-told012345678910判斷句子對(duì)錯(cuò)。come的過(guò)去分詞是comed。RoundThreeGrammar012345678910判斷句子對(duì)錯(cuò)。havenot可以縮寫(xiě)為haven’t。GrammarSummary現(xiàn)在完成時(shí)：四大句式常用的動(dòng)詞的過(guò)去分詞Finished！GoodJob！Summary現(xiàn)在完成時(shí)：定義和肯定句現(xiàn)在完成時(shí)：一般疑問(wèn)句目標(biāo)現(xiàn)在完成時(shí)：時(shí)間標(biāo)志詞現(xiàn)在完成時(shí)：動(dòng)詞過(guò)去分詞的規(guī)則變化PracticesPractices暴走模式兩兩PK，看誰(shuí)反應(yīng)快。1題1分。012345678910A.worksB.hasworkedC.willworkD.isworkingZhangGuimei_______inless-developedareasforover40years.單項(xiàng)選擇。RoundFourPractice012345678910A.werefinishingB.arefinishedC.havefinishedD.finish—MissBrown,we_______cleaningourclassroom.Canwegohomenow?—Yes.Goahead.Practice單項(xiàng)選擇。012345678910B.Did:finishA.Have;finishedC.Will;finishD.Do;finishPractice單項(xiàng)選擇?！猒______you_______writingthee-mailyet?—No,Ihaven't.ButIwilldoitlater.—Lily,whyareyoustillhere?Schoolhasbeenoverforhalfanhour.—BecauseI________mytaskyet.Istillneedonemorehour.012345678910A.haven'tfinishedB.didn'tfinishC.won'tfinishD.don'tfinishPractice單項(xiàng)選擇。1.ZhangGuimei_______inless-developedareasforover40years.A.works B.hasworked C.willwork D.isworking2.—MissBrown,we_______cleaningourclassroom.Canwegohomenow?—Yes.Goahead.A.werefinishingB.arefinished C.havefinishedD.finish3.—_______you_______writingthee-mailyet?—No,Ihaven't.ButIwilldoitlater.A.Have;finishedB.Did:finish C.Will;finish D.Do;finish4.—Lily,whyareyoustillhere?Schoolhasbeenoverforhalfanhour.—B