3、既 +to 又 +ing
remember to do sth. 记住去做某事，表示这件事情还没有做
remember doing sth. 记得做过某事
forget to do sth. 忘记要去做某事。(未做)
forget doing sth. 忘记做过某事。(已做)
regret to do sth. 遗憾地（要）做某事 （还未做呢）
regret doing sth. 后悔做过某事(已经做过了）
try to do sth. 努力做谋事,尽力做某事，但不一定成功
try doing sth. 试图做谋事
stop to do 表示停止现在在做的事情，开始做另外一件事情
stop doing 表示停止现在在做的事情
mean to do sth. 计划做某事
mean doing sth. 意味着做某事
can’t help to do sth. 不能协助做某
can’t help doing sth. 禁不住做某事
go on to do sth. 做了一件事后,接着做另一件事
go on doing sth. 继续做原来做的事
4、do 动词原形
let sb. do sth. 让某人做某事
make sb. do sth. 使某人做某事
make sth. done 使某事完成
have sb. do sth. 使某人做某事
have sth done 做完某事
see sb. do sth. 看见某人做某事
see sb. doing 看人某人正在做
hear sb. do sth. 听见某人做某事
hear sb. doing 听见某人正在做
listen to sb. do sth. 听着某人做某事
listen sb. doing sth 听着某人正在做
look at sb. do sth. 看着某人做某事
watch sb. do sth. 察看某人做某事
feel sb. do sth. 觉得某人做某事
5、双宾语
give sb. sth = give sth to sb. 给某人某物
tell sb. sth = tell sth to sb. 告诉某人某事
borrow sth from sb. 向某人借某物
lend sth to sb. 借某物给某人
buy sth for sb. =buy sb. sth 给某人买某物
show sb. sth=show sth to sb. 向某人展示某物
