Question

they are talking about their homework(改为否定句)？

Answer 1

They are talking about their homework. 他们正在讨论他们的作业。
改为否定句:
They aren't talking about their homework.

Answer 2

They are talking about their
homework .
否定句：
They are not talking about their
homework.
拓展：
将句子变为否定句时，注意以下几点：
1.句中有be动词，情态动词时，直接加not 。
2.句中有助动词的直接加not。
3.没有助动词的选do,does,did。
例：
1.I get up early every day.
I don’t get up early every day.
2.I got up late this morning.
I didn’t get up late this morning.
3.I am a teacher.
I am not a teacher.
4. He is watching TV now.
He is not watching TV now.
5. He can swim.
He can’t swim.
6.He has finished his homework.
He has not finished his
homework .

Answer 3

They are talking about their homework

• 他们正在谈论他们的家庭作业

• 否定句

They are not talking about their homework .

• 他们没有在谈论他们的家庭作业。

Answer 4

否定句是
They aren't talking about their homework.
他们没在讨论他们的家庭作业。

Answer 5

They are not talking about their honmewrk.
现在进行时肯定句改否定句，在be动词后面加not即可。