1.写出下列动词的现在分词形式 1.study 2.think 3.have 4.read 5.train 6.lie

studing thinking having reading training lying waiting shopping cutting eatting
what's your sister doing?she is doing her homework.
he is not doing his homework,he is wacthing TV
再问： 第一个为什么要去y
再答： 固定形式
再答： 一般后面带y的都是去掉y加ing lie 这个词很特别，原形-现在分词-过去分词为 lie -lying-lied它