文档介绍：RevisionTheinfinitive动词不定式构成:to+do(动词原形)用法:用作宾语(v.+todo) learntodo agreetodoplantododecidetodo refusetodobegintodostarttodo ettodoremembertodo liketodoStoptodo :(v.+sb.+todo)’ wishsbtodogetsbtodo ordersbtodofindsbtobe likesbtodowouldlikesbtodo helpsb(to)do作宾语补足语不带to的情况::使役动词:let,make,have感官动词:see,watch,hear,feel,listento比较:(adverbial):.(目的)(目的)(目的)(结果),todoisdifficult.(这时可将其用形式主语it来替换),.(这时不定式与被修饰词有动宾关系。若是不及物动词,介词不能省略)’,what,which,where,when,how加todo可构成不定式短语,在句中可用作主语、宾语、宾语补足语、表语等。’(m)toask.(主语)(宾语)(宾语补足语)(表语)pare)Idon’’’tknowwhattodoaboutit.