stool__________.A.sitwithB.sittingwithC.tositD.tositwith2.动名词(theGerund)例题分析A.作主语例句:1)Readingaloudisveryhelpful.2)It'snousequarrelling.(动名词作主语时常用it作形式主语)B.作表语例句:1)Herjobistakingcareofthechildren.C.作宾语例句:1)Theyhaven'tfinishedbuildingthedam.2)Wehavetopreventtheairfrombeingpolluted。注意:动名词既可作动词宾语也可作介词宾语,如上面两个例句。此外,动名词作宾语时,若跟有宾语补足语,则常用形式宾语it。3)Wefounditnogoodmakingfunofothers.要记住如下动词及短语只跟动名词作宾语:enjoy,finish,suggest,avoid,excuse,delay,imagine,keep,miss,consider,admit,deny,mind,permit,forbid,practice,risk,appreciate,bebusy,beworth,feellike,can'tstand,can'thelp,thinkof,dreamof,befondof,prevent…(from),keep…from,stop…from,protect…from,setabout,beengagedin,spend…(in),eedin,beusedto,lookforwardto,objectto,payattentionto,insiston,feellike要知道如下动词既可跟动名词又可接不定式,但意思差别较大。(1)remembertodo记住要做某事(2)etdoing忘记做过某事