1)DavidandIwantedgoofftofindhelpbutBillinsistedonstayingnearthecar.(wanted后加to，因为want后要接不定式)(2)…ratherthangointotheforestandgettinglost.(getting改get，因为get与其前的go并列)(3)Davidpointedtoapathwhichhethoughtwouldprobablyleadingtoavillage.(leading改为lead，因为其前有助动词would)(4)IwentbacktogetDavidandhelpedhimtostoodup.(stood改为stand，因为tostandup在此为不定式结构)(5)CharlesandLindaMasondoallofthesethingsaswellasclimbedbuilding.(climbed改为climb/climbing，若将aswellas视为连词，则将climbed改为climb，因为它与其前的do并列；若将aswellas视为介词，则climbing，因为介词后动词用动名词)(6)Modernpeopleknowmoreabouthealth,havebetterfood,andtoliveinclearersurroundings.(去掉live前的to，因为live与其前的know,have并列)(7)TheWorldHealthOrganizationandotherorganizationsareworkingimprovehealthallovertheworld.(improve前加to，toimprove…为表目的的不定式短语)(8)…youpaythecostofsendapostcard,thelibrarianwillwritetoyou.(send改为sending，因为介词后接动名词作宾语)(9)…andletyoutoknowwhenthebookyouwanthasreturned(去掉know前的to，因为其前有动词let)(10)Iwanttothankyouagainforhavemeinyourhomeforthesummerholidays.(have改为having，因为介词后接动名词作宾语)(11)Ihadalwayswantedreturntothevillageaftermovingaway.(return前加to，因为want后要接不定式)(12)Itwasverykindofthemtomeetmeattherailwaystationanddrovemetotheirhome.(drove改为drive，因为drive与其前的tomeet并列，此处的drive为省略to的不定式)(13)Ilookforwardtohearfromyousoon.(hear改为hearing，因为其前的to是介词)(14)Playfootballnotonlymakesusgrowuptallandstrongbutalsogivesusasenseoffairplayandteamspirit.(第一个play改为playing，因为动词原形不能用作主语)(15)Iwasoftenalittletiredafteraday’sworkandwatchTVdemandsverylittleeffort.(watch改为watching，因为动词原形不能用作主语)1.Alotofmoneyhasbeenspenttobuythebook.2.Youwillhavetopaythecostofsendapostcard.3.Whathedidwaspuzzled.4.Iwillspendaweekreadingandpreparefortheexamination.5.CharlesandLindadoallofthesethingsaswellasclimbedbuildings.6.YesterdayIhadmybadtoothpullingout.7.Iheardhersingingasongwhichmovedmetotears.8.Imadeaterriblemistake.Iregrettednottotakeyouradvice.9.Whenwereachedthetopofthemountain,westoppedhavingarestbeforewewentdownthemountain.10.There’llbeagoodfilmtonight,rememberseeingitontime!11.Thegamewasover,shewenthome.12.Whenspeaking,youmustmakeyourselfhear.13.ShepretendednotseeingmewhenIcamein.14.AbrahamLincolnwasconsideredbeingoneofthegreatestofallAmericanpresidents.15.Followingbytheofficers,thegeneralinspectedthearmy.16.Thereissomethingwrongwithmycomputer,anditneedsrepaired.17.Don’tburnthefallingleavesontheground.18.Losinginthought,healmostranintoacarinfrontofhim.19.Ienjoytolistentotheclassicmusic.20.Judgebywhathewears,heisafarmer.【答案与解析】1.tobuy改为buying。2.send改为sending。介词of后要求用动名词作宾语。3.puzzled改为puzzling。puzzling表示“令人疑惑不解的”意思。4.prepare改为preparing。preparing和前面的reading是并列结构。5.climbed改为climbing。aswellas是介词短语，后面接动名词或名词。6.pulling改为pulled。havethetoothpulledout表示“请人拔牙”的意思。7.singing改为sing。从后面可以看出来，“我”听完了整首歌曲，强调动作的全过程，用不定式作宾补。8.totake改为taking。用动名词表示对已发生过的事情的后悔。9.having改为tohave。stop的目的是havearest。10.seeing改为tosee。还未看电影。11.was改为being。独立主格结构。12.hear改为heard。makeoneselfheard意为“使别人听到自己的话”。13.seeing改为tosee。pretend后面要求接不定式作宾语。14.being改为tobe。consider后用不定式作宾补。15.following改为followed。过去分词表被动。16.repaired改为repairing。动名词主动形式，表被动意义。17.falling改为fallen。过去分词作定语，强调动作的完成。18.losing改为lost。belostinthought表示“陷入深思”。19.tolisten改为listening。enjoy后面用动名词作宾语。20.Judge改为Judging。Judgingby…为一固定说法。
