"非谓语动词"可分为动词不定式、动名词和分词。它在句子中的作用很多:除了不作谓语外,它可以充当主语、宾语、表语、定语、状语与复合宾语(主语补语或宾语补语)。有些及物动词后面接不带to的不定式作复合宾语。这些动词归纳如下:一感(feel).二听(hear,listen to),三让(have,1et, make),四看(see,watch,notice,observe)。再加上help somebody(to)do something和look at somebody do something。还有"二让"属特殊:get somebody to do something 与keep somebody doing。
而有些及物动词后面接动名词(the -ing form)作宾语。这些动词归纳为一句话:Papa C makes friends。这是由如下动词的开头字母组成:permit,advise, practise, avoid, consider, mind, allow, keep, enjoy, suggest, finish,risk,imagine, escape, need, delay, stand(忍受)。 为了容易记住,也可以编成顺口溜:"允许完成练习,建议避免冒险,考虑延期逃跑,喜欢保持想象,需要反对忍受"。其相对应的动词依次是:permit/allow, finish, practise ; advise/suggest, avoid,risk, consider, delay, escape/miss, enjoy/appreciate, keep, imagine; need/want/require, mind, can’t help/can’t stand