11) 使用-ing分词的几种情况
1.在进行时态中。如：
He is watching TV in the room.
They were dancing at nine oclock last night.
2.在there be结构中。如：
There is a boy swimming in the river.
3.在have fun/problems结构中。如：
We have fun learning English this term.
They had problems getting to the top of the mountain.
4.在介词后面。如：
Thanks for helping me.
Are you good at playing basketball？
5.在以下结构中：
enjoy doing sth 乐于做某事
finish doing sth 完成做某事
feel like doing sth 想要做某事
stop doing sth 停止做某事
forget doing sth 忘记做过某事
go on doing sth 继续做某事
remember doing sth 记得做过某事
like doing sth 喜欢做某事
keep sb doing sth 使某人一直做某事
find sb doing sth 发现某人做某事
see/hear/watch sb doing sth
看到/听到/观看某人做某事
try doing sth 试图做某事
need doing sth 需要做某事
prefer doing sth 宁愿做某事
mind doing sth 介意做某事
miss doing sth 错过做某事
practice doing sth 练习做某
be busy doing sth 忙于做某事
cant help doing sth禁不住做某事