中学语法现在进行时讲解

1 现在进行时 一、现在进行时的概念及构成 1.现在进行时的概念 现在进行时表示现在某一时刻或某一阶段正在进行或发生的动作，经常和时间状语now 连用或用在look, listen at present.等引出的句子中。 二、.现在进行时的构成和运用： ○a 表示现在正在发生或进行的事件或动作。 ○b 也可表示当前一段时间或现阶段正在进行的动作。 句子的结构如下： ( be ) am is + 动词 ing are 如：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. 动词现在分词构成: 1) 正常变化是在动词原型后加ing 如: read----reading ; drink---drinking ; eat---eating ; 2) 以e 结尾的动词，去掉e 再加ing 如: write ---writing ; make--- making ; ride---riding ; 3).重读闭音节（ 只有一个元音字母，而其后跟有一个辅音字母时）要双写结尾的辅音字母再加ing sit---sitting ; swim--swimming ; put---putting ; run—running 4)以ie 结尾的动词-ie+y+ing： lie -- lying die --- dying 下面以talk 为例来说明其各种句式。 人称 肯定句 否定句 一般疑问句 及其答语 第一人称 I I’m talking. I’m not talking. Am I talking? Yes, you are. No, you aren’t. we We are talking. We aren’t talking. Are we talking? 2 Yes, we are. No, we aren’t. 第二人称 you You are talking. You aren’t talking. Are you talking? Yes, I am. No, I am not. you You are talking. You aren’t talking. Are you talking? Yes, we are. No, we aren’t. 第三人称 he He is talking. He isn’t talking. Is he talking? Yes, he is. No, he isn’t. she She is talking. She isn’t talking Is she talking? Yes, she is. No, she isn’t. it It is talking. It isn’t talking. Is it talking? Yes, it isn’t. No, it isn’t. they They are talking. They aren’t talking. Are they talking? Yes, they are. No, they aren’t. 三、现在进行时的其他用法 1.现在进行时代替一般现在时 现在进行时有时可以代替一般现在时，表示...