现在进行时态肯定句与否定句的句式结构

Question

急急急急

Answer 1

肯定句: 主语 + be动词 + 动词ing

比如：He is doing his homework now .

否定句：主语 + be动词+ not + 动词ing （句式和肯定句相同，不同的是否定句要在be动词后面加not）

比如：He isn't doing his homework now .

Answer 2

肯定：
主语（I/You/He/She/It/We/You/They)+be动词（am/is/are)+动词ing
例句：
I am watching TV.
She is eating lunch.
It is raining outside.

否定：
主语（I/You/He/She/It/We/You/They)+be动词（am/is/are)+not+动词ing
例句：
I am not reading a book.
We are not listening to the music.
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