结构:todo(否定)nottodo二
时态与语态主动语态被动语态一般式进行式完成式完成进行式不定式todotobedonetobedoingtohavedonetohavebeendonetohavebeendoing--------------------1
作宾语补足语4
作独立成分8
与疑问词等连用三
用法/功能Toseeistobelieve
It’simportanttolearn
主语不定式作主语时,往往放在谓语之后,用it作形式主语
Myjobtohelpthepatient
Yourtasktocleantheclassroom
isis(2)
表语Iwanttogohome
Theworkersdemandedtogetbetterpay
Ifounditnecessarytotalktohimagain
(3)宾语think/consider/findit+adj
+todo常用动词不定式作宾语的动词有:hope,refuse,learn,setoutchoose,decide,agree,manage,pretend,plan
Theteachertoldmetocleantheblackboard
Iexpectyoutogivemesomehelp
宾补五看watchseelookatobservenotice三使letmakehave二听listentohear一感觉:feelwarn,tell,allow,help,ask,force等Imadehimdohiswork
Hewasmadetodohiswork(byme)
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,那么介词后的不定式不带to,相反则带to