动词to do sth 和动词不定式有区别吗答:加原形:情态动词和助动词等,如:can,could,may,should,might,must,ought,need,have,let,make,help sb (to)do sth.加不定式 want,would like,like,love,be going to,go on,hate,begin,continue,start,ask,tell,afford,agree,aim,appear,arrange,believe,care,choose,claim,come,consent,dare,decide...