1: My sister is playing the piano now.
Is my sister playing the piano now?
My sister isn`t playing the piano now.
2:The teacher is explaining the rule.
Is the teacher explaining the rule?
The teacher isn`t explaining the rule.
3:We are learning the new words.
Are we learning the new words?
We aren`t learning the new words.
4:Ann is standing at the window.
Is Ann standing at the window?
Ann isn`t standing at the window.
5:We are going to the park.
Are we going to the park?
We aren`t going to the park.
6:John is taking a piece of chalk and writing a sentence on the blackboard.
Is John taking a piece of chalk and writing a sentence on the blackboard?
John isn`t taking a piece of chalk and writing a sentence on the blackboard.
7:I am doing my homework.
Am I doing my homework?
I`m not doing my homework.
8:Jane is speaking on the telephone.
Is Jane speaking on the telephone?
Jane isn`t speaking on the telephone.
9:She is cooking supper.
Is she cooking supper?
She isn`t cooking supper.
Объяснение:
вопросительную
1: Is my sister playing the piano now?
2: Is the teacher explaining the rule?
3: Are we learning the new words?
4: Is Ann standining at the window?
5: Are we going to the park?
6: Is John taking a piece of chalk and writing a sentence on the bleckboard?
7: Am I doing my homework?
8: Is Jane speaking on the telephone?
9: Is she cooking supper?
отрицательную
1: My sister is not playing the piano now.
2: The teacher is not explaining the rule.
3: We are not learning the new words.
4: Ann is not standining at the window.
5: We are not going to the park.
6: John is not taking a piece of chalk and writing a sentence on the bleckboard.
7: I am not doing my homework.
8: Jane is not speaking on the telephone.
9: She is not cooking supper.
