1. I know this girl Do I know this girl? I don't know this girl Whom I know? Do I know this girl or this boy? I know this girl, don't I? 2. She sings very well Does she sing very well? She doesn't sing very well Who sings very well? Does she sing or dance very well? She sings very well, doesn't she? 3. She is playing the piano now Is she playing the piano now? She isn't playing the piano now Who is playing the piano now? Is she playing the piano or the guitar now? She is playing the piano now, isn't she? 4. He has been walking in the park for half an hour Has he been walking in the park for half an hour? He hasn't been walking in the park for half an hour Who has been walking in the park for half an hour? Has he been walking in the park or in the garden for half an hour? He has been walking in the park for half an hour, hasn't he?
Do I know this girl?
I don't know this girl
Whom I know?
Do I know this girl or this boy?
I know this girl, don't I?
2. She sings very well
Does she sing very well?
She doesn't sing very well
Who sings very well?
Does she sing or dance very well?
She sings very well, doesn't she?
3. She is playing the piano now
Is she playing the piano now?
She isn't playing the piano now
Who is playing the piano now?
Is she playing the piano or the guitar now?
She is playing the piano now, isn't she?
4. He has been walking in the park for half an hour
Has he been walking in the park for half an hour?
He hasn't been walking in the park for half an hour
Who has been walking in the park for half an hour?
Has he been walking in the park or in the garden for half an hour?
He has been walking in the park for half an hour, hasn't he?