常见的有这些词后面跟todosth:

　　afford,agree,appear,ask,arrange,attempt,choose,decide,expect,fail,help,hope,intend,learn,manage,mean,need,offer,pay,plan,prepare,pretend,promise,refuse,request,seem,want,wish

　　此类词叫做不定式

　　另外请区分后面只跟ing的词：

　　acknowledge,admit,appreciate,avoid,celebrate,consider,delay,deny,discontinue,discuss,dislike,dispute,endure,enjoy,escape,explain,feellike,finish,forgive,imagine,justify,,keep(continue),mention,miss,postpone,practice,prevent,prohibit,quit,recall,recommend,regret,report,resist,risk,suggest,understand

　　还有既可接todo又可接doing的有：

　　get,keep,have,leave,find,see,notice,hear等