将下列每个英语句子改成一般疑问句加回答，和否定句。

1：Mary works in the park .
Does Mary work in the park?
Yes, she does.
No. Mary doesn't work in the park.

2:Students go to school .
Do students go to schoo?
Yes, they do.
No. Students don't go to school.

3.He sings well .
Does he sing well?
Yes, he does.
No. He doesn't sing well.

1. -does Mary work in the park?          -yes,she does         Mary does not work in the park        

2. -do Students go to school?             -yes,they do          Students don't go to school

3. -does he sing well?                       -yes,he does           he does not sing well

1. 一般疑问句加回答Does Mary work in the park?Yes,she does./No,she doesn't.否定句Mary doesn't work in the park.

2. 一般疑问句加回答Do students go to school?Yes,they do./No,they don't.否定句 Students don't go to school.

3. 一般疑问句加回答Does he sing well?Yes,he does./No,he doesn't.否定句He  doesn't sing well.

Does mary work in the park? Mary doesnot work in the park.
do students go to school? students donot go to school.
does he sing well? he doesnot sing well.