Unit8第2課時語法精講-八年級英語下冊課堂（人教版）（含音頻）

第二課時

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

2.主語是三單用has，再跟動詞過去分詞；3.have可以縮寫為’ve。1.從定義上簡單來講，事情要做一段時間，還沒有做完，持續(xù)到現(xiàn)在；2.過去分詞有規(guī)則和不規(guī)則之分，加ed是規(guī)則變化，沒有ed是不規(guī)則變化?！驹洹縄’vealreadyfinishedreadingit.【例句】1.Wehavekeptthesebooksfortwodays.2.They’vejustseenthisfilmfor10minutes.3.ShehaswatchedTVforhalfanhour.定義：從過去某個時間持續(xù)到現(xiàn)在?？隙ň洌褐髡Z

+have+動詞過去分詞+for+其他。1個1分。【寫出下列原形】1.eaten-_______2.kept-_______3.seen-________4.watched-________eatkeepseewatch現(xiàn)在完成時：一般疑問句GrammarTwoHaveyoureadTreasureIslandyet？Hassheevermovedhouse?助動詞Have/Has+主語+動詞過去分詞done+賓語Have/has+主語+done...?Yes,主+have/has.謂賓主Hasthetownchangedalotovertheyears?多年來小鎮(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判斷句子對錯?，F(xiàn)在完成時表示過去持續(xù)到現(xiàn)在的動作。RoundOneGrammar012345678910Grammar判斷句子對錯?，F(xiàn)在完成時一般疑問句只需要把have/has和主語交換位置

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

eatenit.Haveyouevermovedhouse?just,

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

（一般疑問句）（否定句）justnow用于一般過去時現(xiàn)在完成時：動詞過去分詞規(guī)則變化GrammarFour大部分動詞+edfinished以e結(jié)尾的動詞+dchange以y結(jié)尾的動詞把y改為i+edcarry以重讀閉音節(jié)結(jié)尾的動詞雙寫最后一個字母+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判斷句子對錯。justnow和just都用于現(xiàn)在完成時。RoundTwoGrammar012345678910判斷句子對錯。不規(guī)則變化中有的動詞過去式和過去分詞與原形一樣。GrammarGrammarFive現(xiàn)在完成時：四大句式Ihavearrived.Ihavenotarrived.肯定句：主語+have/hasdone+...Yes,you+have/has.HaveIarrived?No,you+haven’t/hasn’t.否定句：主語+haven’t/hasn’tdone+...一般疑問句：Have/Has+主語+done+...？Yes,主+have/has.No,主+haven’t/hasn’t.havenot=haven’thasnot=hasn’tWhathaveyoudone?特殊疑問句：Whathave/has+主語+done+...?GrammarOne常用的動詞的過去分詞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判斷句子對錯。come的過去分詞是comed。RoundThreeGrammar012345678910判斷句子對錯。havenot可以縮寫為haven’t。GrammarSummary現(xiàn)在完成時：四大句式常用的動詞的過去分詞Finished！GoodJob！Summary現(xiàn)在完成時：定義和肯定句現(xiàn)在完成時：一般疑問句目標(biāo)現(xiàn)在完成時：時間標(biāo)志詞現(xiàn)在完成時：動詞過去分詞的規(guī)則變化PracticesPractices暴走模式兩兩PK，看誰反應(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