改成一般疑问句,再做肯定回答1,She is looking at the zebra.2The policeman is watching the car.

1 She is looking at the zebra.
Is she looking at the zebra? ----Yes ,she is .
2 The policeman is watching the car.
Is the policeman watching the car ?----Yes , he is .
3 The birds in the tree are eating now.
Are the birds in the tree eating now ? ---- Yes , they are .
4 I am playing cards.
Are you playing cards?---- Yes, I am .
5 The sun is shining.
Is the sun shining? ---- Yes , it is .