所以也有人这样给一般疑问句下定义——可以用 yes 或 no 来回答的疑问句就叫一般疑问句。如： —Can you swim to the other side？ 你能游到对岸吗？ —Yes, I can.是的，我能。 — No，I can’t.不，我不能。
构成:基本的结构为：be/助动词/情态动词+主语+谓语/表语+(其他),句子要读升调，如： Are
they your friends？ 他们是你的朋友吗？ Can you play basketball？你会打篮球吗？
陈述句改一般疑问句规则
1. 当谓语动词为be时由于动词be根据不同的时态和人称可以有am, is, are, was, were等不同形式，此时要构成疑问，一律将动词be的适当形式移到句首。如：
He is sleeping. 他在睡觉。→Is he sleeping? 他在睡觉吗？
They were very busy. 他们很忙。→Were they very busy? 他们很忙吗？
2. 含情态动词的一般疑问句的构成
一般疑问句面前人人平等：情态动词与am / is / are一样，也可直接将它们提至主语前，所以问题迎刃而解了。如： I can spell it. →Can you spell it? 你会拼写它吗？
3. 含实义动词的一般疑问句的构成
当谓语动词为实义动词时，通常应根据不同时态和人称在句首加助动词do, does, did等。如逢主语为第三人称单数，实义动词为一般现在时，添加助动词does,实义动词要变原形，有时陈述句中的some还要变作any等。若实义动词为一般过去时，添加助动词did,实义动词由过去式变为原形。如：
She lives in Beijing. →Does she live in Beijing? 她住在北京吗？
补充：当谓语动词为动词have时
若have表示拥有，表示“吃(=eat)”、“喝(=drink)”“拿(=take)”等义，这时候的have看做实义动词，疑问式的改法同实义动词一样。若have是用作助动词构成完成时态，其疑问式的改法就是将其移到句首。
习题
1. His father is an English teacher. → Is his father an English teacher? 2. These cats are crying. → Are these cats crying? 3. They can swim. → Can they swim? 4. I go to school on foot. → Do you go to school on foot?
5. Kitty is wearing her new uniform. →Is Kitty wearing her new uniform? 6.He likes English. →Does he like English？ 7. His father went to work by bus yesterday.
→ Did his father go to work by bus yesterday?
8.Mrs. Li and Kitty are in a big shop. →Are Mrs. Li and Kitty in a big shop? 9.He often walks to school. →Does he often walk to school? 10.She gave me some. →Did she give you any?
11.He had bread for breakfast .→Did he have bread for breakfast? 12.He has had a bad accident. →Has he had a bad accident?
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