PAGE1頁(yè)NUMPAGES7一.定義：t二.動(dòng)詞不定式的構(gòu)成：to+動(dòng)詞不定式作主語(yǔ)時(shí)，句子的謂語(yǔ)動(dòng)詞常用單數(shù)，其位置有以下兩種：如：TogettherebybikewilltakeushalfanitIt+be+名詞+todoItsourdutytotakegoodcareoftheIttakessb+sometime+todoHowlongdidittakeyoutofinishtheIt+be+形容詞+forsb+todoItisdifficultforustofinishwritingthecompositioninaquarterofanhour.It+be+形容詞+ofsb+todoItisstupidofyoutowritedowneverything(that)theteachersays.Itseems(appears)+todoItseemedimpossibletosave在句型中，常用表示客觀狀況的形容詞，如：difficult，easy，hard，important，impossible，necessary等;在句型中，常用carelessclevergoodfoolishhonest，kind，lazy，nice，right，silly，stupid，wise等表示贊揚(yáng)或指責(zé)的詞。sb，Sbis++todo句式，如：ItskindofyoutohelpmewithmyEnglish.=YouarekindtohelpmewithmyEnglish.Itseasy(forme)todothat thefirst, thenext, thelast, thebest, toomuch, toolittle,notenough1、Itssonicetohearyour2、ItsnecessaryforyoutolockthecarwhenyoudonotuseItsverykindofhimtohelp 1、Itwassillyofustobelieve 我們真愚蠢，竟然信任了他2Itseemedselfishofhimnottogivethemanything. 其他系動(dòng)詞如，look，appear當(dāng)不定式作主語(yǔ)的句子中又有一個(gè)不定式作表語(yǔ)時(shí)，不能用Itis…(對(duì))Toseeisto 眼見(jiàn)為實(shí)(錯(cuò))Itistobelieveto三.動(dòng)詞不定式作賓語(yǔ)后面能接不定式作賓語(yǔ)的動(dòng)詞有：agree,ask,choose,decide,forget,hope,learn,want,wish,wouldlike等。1、Wehopetogettherebeforedark.2、Themandecidedtodoitherself.動(dòng)詞不定式作賓語(yǔ)的留意事項(xiàng)(2remembertodo記住要做某事rememberdoing記得曾經(jīng)做過(guò)某事forgettodo遺忘要做某事forgetdoing遺忘曾經(jīng)做過(guò)某事stoptodo停下來(lái)去做某事stopdoing停止做某事goontodo接著做另一件事goondoing接著做原來(lái)在做的事it如：Hefounditverydifficulttogettosleep.他發(fā)覺(jué)很難入睡。onlyafew(=few)notafew(=many)quiteafew(=many)manya(=many)Manybooksweresold.Manyabookwassold.9many,muchMany,much,many,muchHowmanypeoplearethereatthemeetingHowmuchtimehasweleftManyoftheworkerswereatthemeeting.Muchofthetimewasspentonlearning.listento,laughat,getto,lookforwaitfor,hearfrom,turnon,turnoff,worryabout,thinkof,lookafter,spend…on…，等。ontime,intime,bybus,onfootwithpleasure,onone’swayto,introuble,atbreakfast,attheendof,intheend等。belatefor,beafraidof,begoodat,beinterestedin,beangrywith,befullof,besorryfor等。lookfor,lookafter,askfor,laughathearof等。這類(lèi)短語(yǔ)動(dòng)Don’tlaughatTomaskedhisparentsforabike.giveuppickupthinkoverfindouthandin,You’llhandinyourhomeworktomorrow.Pleasedon’tforgettohanditin.(3)常見(jiàn)的有g(shù)oonwith,catchupwithGoonandI’llcatchupwithyouinfiveminutes.Afterashortrest,hewentonwithhisresearchwork.takecareof,makeuseof,payattentionto,makefunof等。Youshouldpayattentiontoyourhandwriting.Weshouldmakefulluseofourtime.(5)leaveopen,setfreecut