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 o'clock 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

　　can't help doing sth禁不住做某事