第1个回答 2012-03-27
1、肯定句: I am swimming now.
否定句: I am not swimming now.
一般疑问句: Are you swimming now?
肯定回答: Yes, I am.
否定回答: No, I am not.
2、肯定句:I'm doing housework now.
否定句: I'm not doing housework now .
一般疑问句 Are you doing housework now?
肯定回答: Yes, I am.
否定回答: No,I'm not.
3、
肯定句:They do homework
否定句:They don't do homework
一般疑问句:Do they do homework ?
肯定回答: Yes, they do.
否定回答: No, they don't.
第2个回答 2012-03-25
1.I'm swimming now.
I'm not swimming now.
Are you swimming now?
No,I'm not
2.I'm doing housework now.
I'm not doing housework now .
Are you doing housework now?
No,I'm not.
3.They're doing homework now.
They're not doing homework now.
Are they doing homework now?
No,they're not.本回答被网友采纳
第3个回答 2012-03-25
1 I am swimming now.
I am not swimming now.
Are you swimming now?
Yes, I am.
No, I am not.
2 I am doing housework now.
I am not doing housework now.
Are you doing housework now?
Yes, I am .
No., I am not.
3 They are writing their homework now.
They are not writing their homework now.
Are they writing their homework now?
Yes, they are.
No, they aren't.