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 sth(停下来去做某事,此事是即将要做的事) 3、带 to 的不定式可以作后置定语,如:something to eat(吃的东西) 4、不定式表目的:如 To save class time, our teacher has us do half of the exercises in class and complete the other half for our homework
为了节约课堂时间,我们的老师要求我们在课堂上做一半练习,剩下的一半在课后作为家庭作业完成
注意:for 也可表目的,但 for 后面加名词或动名词,如 I buy it for you
5、动名词:(介词后面加名词或动名词) have fun doing sth