he goes to work at seven，改为一般疑问句

he goes to work at seven，改为一般疑问句？

把He goes to work at seven.改为一般疑问句是：

Does he go to work at seven?

在He goes to work at seven.这个句子中，谓语动词是goes，goes这个词是一个实义动词,把含有实义动词作谓语的句子变成一般疑问句，就必须借助动词do,然后再根据句子的时态、人称和数再具体确定是用do,还是用does,还是用did,助动词体现了时态、人称、数，原谓语动词用原形。如：

Mary plays the piano every day.

改为一般疑问句：

Does Mary play the piano every day?

We sweep the floor every afternoon.

改为一般疑问句：

Do you sweep the floor every afternoon?

They planted many trees last spring.

改为一般疑问句：

Did they plant many trees last spring?