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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 | 
