Question

They+play+football+in+the+afternoon,改为一般疑问句？

Answer 1

将“They play football in the afternoon.（他们在下午踢足球。）”改为一般疑问句是：Do they play football in the afternoon?（他们在下午踢足球吗？）

---

将陈述句变为一般疑问句应遵循：一提，二改，三帮，四问号。

---

一提：如果一个句子中含有be动词(am, is, are,)或情态动词can, must,的时候，变一般疑问句时将他们提到句首。

She is a new student. (一般疑问句)

Is she a new student?

---

二改：改大小写，改人称

I—改为you we---改为you our---改为your my----改为your

ours—改为yours.

She is my friend. (变为一般疑问句)

Is she your friend? 肯定回答：Yes, she is. 否定回答：No, she isn’t.

---

三帮：如果一个句子中没有be动词和情态动词，应该借助于三D来帮助。(do, does, did)且后面的动词用原形。

1.I want to drive a bumper car. (变为一般疑问句)

Do you want to drive a bumper car? Yes, I do. No, I don’t.

2.He likes swimming.

Does he like swimming? Yes, he does. No, he doesn’t.

备注：do 用于主语是第一人称或第三人称复数形式中。

does仅仅用于主语是第三人称单数形式中。

did 用于过去时态中。

其后的动词一律还原为原形

---

四问号：疑问句句末要用问号。

Answer 2

这句话的谓语动词是原形动词play，由此可知，句子的时态是一般现在时，由陈述句改为一般疑问句，需要借助助动词do。
Do they play football in the afternoon?

Answer 3

Do they play football in the afternoon?

直接在句子开头加助动词Do