高中英语选修7-unitGrammar不定式-PPT.ppt

动词不定式动词不定式的作用FunctionsofInfinitive三.用法/功能Iwanttogohome.
Ifounditnecessarytotalktohimagain.Theteachertoldmetocleantheblackboard.
Iexpectyoutogivemesomehelp.
e.g.Imadehimdohiswork.1.Theysawtheboyfallsuddenlyfrom
thetree.
Theboywasseentofallsuddenly
fromthetree.3>不定式用在介词but,except,besides
后时,如果这些介词前有行为动词do的
各种形式(do/did/does),那么介词后的不定式
不带to,相反则带to.Ihavesomethingtosay.
Hehasalotofhomeworktodo.
注意：如果不定式中的动词是不及物动词,
则不定式中要有介词.
Heislookingforaroomtolivein.
Thereisnothingtoworryabout.1.不定式做定语时常放在被修饰的名词或代词
之后
(1)Shewasverybusyandhadnotimeto
visitherfriends.
(2)Ladiesandgentlemen,Ihavesomething
importanttotellyou.

2.当名词被thefirst,thelast,theonly等词以及
形容词最高级修饰时
eg:Sheisalwaysthefirsttocomeandthe
lasttoleave.4.如果不定式是不及物动词,则后面需适当的介词
Pleasepassmesomepapertowrite____.
Shehasanicepentowrite_____.
Heboughtaflatforthefamilytolive____.3.结果状语:
Icameheretoseeyou.
Hegotupearlytocatchthetrain.(7).独立结构(8)不定式与疑问词who,which,when,how,what等连用，在句中起名词作用，可充当主语、表语、宾语等。固定词组和句型1.Itisgoodtohelpothers.
2.Itismyambitiontomakesurethatthedisabledpeopleinourneighborhoodhaveaccesstoallpublicbuildings.

3.MyambitionistoworkinthecomputerindustrywhenIgrowup.4.Idon’thavetimetositaroundfeelingsorryformyself.
5.Heisalwaysthefirsttocomeandthelasttoleave.
6.Abigcompanyhasdecidedtobuyitfromme.
7.MyfellowstudentshavebeguntoacceptmeforwhoIam.8.Ihavehadtoworkhardtoliveanormallife.
9.SomedaysIamtootiredtogetoutofbed.
10.Wemustcallonlocalgovernmentto givefinancialassistancetodisabled people.exerciseMyteacherwasmade_____histeaching
becauseofpoorhealth.
givingupB.togiveup
C.giveupD.givenup

2.Thesentencewants____oncemore.
explainedB.toexplain
C.beingexplainedD.explaining

3.TheArcticisconsidered____thenorthernpartoftheAtlantic.
havingbeenB.tohavebeen
C.tobeD.being?4.TheEmperororderedthewonderfulcloth
_____forhimwithoutdelay.
tohavewovenB.tobewoven
C.tobeweavingD.toweave

?5.IfoundtheGermanlanguagehard____.
learnedB.learning
C.tobelearnedD.tolearn

?6.—Thelightintheofficeisstillon.
---Oh,Iforgot______.
turningitoffB.turnitoff