to do和doing有什么区别,咋用的(要详细)

to do:
tell sb to do
ask sb to do
want sb to do
teach sb to do
begin(start) to do
doing:
keep sb doing sth
have a hard time doing
都可以的:
help sb to =help sb doing
不一样的:
stop to do停下去做
stop doing停下正做的
remember(forget) to do记住去做
remember(forget) doing记得做过
need to do主动需要(如我需要洗衣服)
need doing被动(如我的衣服需要洗)
很简单啦,我也上初二