一、不定式和动名词：1、省略了to的不定式：（助动词后面加动词原形）have sb. do sth. let sb.do sth. make sb. do sth. help sb. do sth./help sb. with sth. can/may/have to/must do sth. see sb do sth（看见某人做某事，看见全过程，类似的还有：hear sb do sth , watch sb.do sth , find sb. do sth., notice sb. do sth等）2、带to的不定式： want to do sth. want sb. to do sth. ask sb. to do sth. decide to do sth would like to do sth. hope to do sth.like to do sth（一般指一次性的行为） love to do sth. remember to do sth（记得去做某事，此事还未做） stop to do s
