八下英語(yǔ)Unit2I'llhelptocleanupthecityparks語(yǔ)法專(zhuān)題——?jiǎng)釉~不定式動(dòng)詞不定式的用法Thegirlcouldvisitthesickkidsinthehospitaltocheerthemup.課本原句：這個(gè)男孩可以幫助打掃城市公園。Theboycouldhelptocleanthecitypark.這個(gè)女孩可以去醫(yī)院看望生病的孩子，鼓勵(lì)他們。Thegirlcouldvolunteerinanafter-schoolstudyprogramtoteachkids.這個(gè)女孩可以在一個(gè)課后學(xué)習(xí)項(xiàng)目當(dāng)志愿者，教小孩。動(dòng)詞不定式的構(gòu)成todo動(dòng)詞不定式的用法作主語(yǔ)Tohaveagoodsleepisveryimportantforourhealth.謂語(yǔ)不定式結(jié)構(gòu)做主語(yǔ)擁有好的睡眠對(duì)我們的健康非常重要。作表語(yǔ)Mydreamistobeateacher.系表結(jié)構(gòu)我的夢(mèng)想是成為一名老師。動(dòng)詞不定式的用法作賓語(yǔ)IplantogohikingthisSaturday.謂語(yǔ)不定式結(jié)構(gòu)作賓語(yǔ)作賓語(yǔ)補(bǔ)足語(yǔ)Sheinvitedmetogotoherbirthdayparty.謂語(yǔ)賓語(yǔ)不定式結(jié)構(gòu)作賓語(yǔ)補(bǔ)足語(yǔ)作定語(yǔ)He'stheonlyonetogetthere.動(dòng)詞不定式的用法作狀語(yǔ)Igotupearlytocatchtheearlybus.不定式結(jié)構(gòu)作目的狀語(yǔ)動(dòng)詞不定式的用法特殊疑問(wèn)詞+動(dòng)詞不定式Couldyoupleasetellmehowtodoit？不定式作賓語(yǔ)補(bǔ)足語(yǔ)Andydoesn’tknowwhattowear.不定式作主語(yǔ)Howtodealwiththeproblemisthemostimportanttous.不定式作賓語(yǔ)動(dòng)詞不定式的常見(jiàn)搭配decidetodosth.

決定做某事Andydecidedtoworkthere.plantodosth.計(jì)劃做某事Imisetodosth.

承諾做某事Andyplannedtogoonapicnicthisweekend.refusetodosth.拒絕做某事Thechildrefusedtoeatthepotatoes.動(dòng)詞不定式的常見(jiàn)搭配agreetodosth.同意做某事Andy’sparentsagreetolethergooutwithherfriends.forgettodosth.忘記去做某事Iforgotclosingthewindowsthismorning.forgetdoingsth.忘記曾經(jīng)做過(guò)某事Iforgottoclosethewindowsthismorning.我今天早上忘記關(guān)窗了。（窗沒(méi)有關(guān)）我忘記我今天關(guān)了窗。（窗關(guān)上了但是“我”忘記了）動(dòng)詞不定式的常見(jiàn)搭配tellsb.todosth.告訴某事做某事Ourteachertoldusnottoswimintheriver.advisesb.todosth.建議某事做某事AndyadvisedmetolisteningtomusicwhenIfeltupset.expectsb.todosth.期待謀某人做某事Myparentsexpectmetogetgoodgradesinthefinalexam.鞏固練習(xí)題：用所給單詞的適當(dāng)形式填空：Parentsshouldalwaystelltheirkids___________(nottalk)withstrangers.—Sam,don’tforget____________(return)thebooktothelibrarytomorrow.—OK,Iwon’t.3.Wesetupthisgroup____________(help)disabledpeoplelikeBenSmith.4.—Canyoucometomybirthdaypartytonight?—Yes,I’dloveto.ButIhavetofinish______(do)myEnglishhomeworkfirst.nottotalktellsb.nottodosth.告訴某人做某事toreturnforgettodosth.忘記做某事tohelp不定式結(jié)構(gòu)作目的狀語(yǔ)doingfinishingdoingsth.完成做某事鞏固練習(xí)題：5.Mr.Zhouisgoodatcookingandhehasdecided__________(open)hisownrestaurant.6.Suepractices__________(play)theviolinhardandoftengiveswonderfulperformances.7..It’snecessaryforus___________(learn)Englishwell.

toopendecidetodosth.決定做某事playingpracticedoingsth.練習(xí)做某事tolearnIt’s+形容詞+forsb.+todosth.8.MrWuhasrecommendedmanybooks.Haveyoudecidedwhich______(read)first？9.Itoftentakesmetwohours______(do)myhomeworkintheevening.10.Youshoulddowhatyoucan____________(improve)yourEnglish,LiMing.toread特殊疑問(wèn)詞+todotodoIttakessb.+時(shí)間+todosth.

花某人多長(zhǎng)時(shí)間去做某事

toimprove不定式結(jié)構(gòu)作狀語(yǔ)11.I’dlovetogohikingwithAndy,butIhavemuchhomework______(do).12.Itwasraining.Myfatheraskedme___________(take)raincoat.13.Youneed__________(make)studyplanfirst.todo不定式結(jié)構(gòu)作賓語(yǔ)補(bǔ)足語(yǔ)totakeasksb.todosth.要求/叫某人做某事tomakeneedtodosth.需要做某事14.

Mary

is

so

sad.

We

have

to

do

something______________(cheer)herup.15.Tomisahumorousboyandhealwaysmakeus_________(laugh)16.Myparentsdon’tallow__________(go)outwithmyfriendsatnight.17.Jane,Johnneedshelp.Let’s________(help)him.tocheer不定式結(jié)構(gòu)作定語(yǔ)laughmakesb.dosth.使某人做某事使役動(dòng)詞+動(dòng)詞原形togoallowsb.todosth.允許某人做某事helpletsb.dosth.使某人做某事使役動(dòng)詞+動(dòng)詞原形18.Mymothergetsupearlyeverymorning__________(make)breakfastforme.19.Iwoundnevergiveupthe