陈述句变一般疑问句
（人称是第一人称时，要变成第二人称）
1. 陈述句中有be动词时，把be动词提到主语前面，将句号变成问号。
I am a student. → Are you a student ?
She is a girl. →Is she a girl ？
2. 陈述句中有情态动词时，把情态动词提到主语前面，将句号变成问号。
I can swim. → Can you swim ?
They will go to school next month. →Will they go to school next month?
3. 陈述句中有实意动词时，我们要借助助动词来帮助提问，动词要变成原形
①当句中动词是原形时，我要借助do来提问
They like playing the piano.→Do they like playing the piano?
We have a great time at school. → Do we have a great time at school?
②当句子中动词是第三人称单数时，我们要借助助动词does来提问,动词要变成原形
She waters the plants every day.
→ Does she water the plants every day?
He goes to school five times a week.
→ Does he go to school five times a week?
She does her housework every day.
→ Does she do her housework every day?
③当句子中动词时过去式时，我们要借助助动词did来提问，动词要变成原形
We watched TV last night.
→ Did we watch TV last night?
They enjoyed theirselves at the party.
→ Did they enjoy theirselves at the party?
当句子中有some，要把some变成any。
