现在进行时: 表示说话时正在进行的、发生的动作 通常在句子中有以下的词:now, look, listen. 句子的结构如下: be 动词(am is are) +动词 ing肯定句:be + 动词ing 否定句:be not + 动词ing 如: 肯定句:1. I am listening to the music now. 2. The students are drawing pictures now. 3. Listen! She is singing . 4. Look! Mr Li is riding a bike. 否定句:1.I am not (Im not)listening to the music now. 2.The students are not(arent) drawing pictures now. 其中,动词的ing形式有如下方法: 1. 在动词后直接加ing,如: go-going , wash-washing,flyflying 2. 以不发音字母e结尾 , 去掉e再加ing,如 :dri