0Rule 1: Use words like Am/Is/Are to ask Yes / No questions about the identity or description of a person, place, or thing.
Eg:
- Is this good?
- Am I going to pass the exam?
- Are they dancing?
Rule 2: Use the verb HAVE/HAS to ask if somebody has already done an action.
Eg:
- Have you gone to school?
- Has this been a good day?
Rule 3: Use the verb DO (I, you, we, they) and DOES (he, she, it)to ask Yes / No questions in order to obtain facts about people, places, or things.
Eg:
- Do you know where the school is?
- Do you know when they will open the shop?
- Does he speak English?
Rule 4: Use Can/Could to ask Yes / No questions about possibilities or uncertainties
Eg
- Can you help me find the school?
- Could you take this to Mr. Puri?
- Could you tell me the time?
