Yes/No Questions:
* Are you going to the party?
* Did you finish your homework?
* Is it raining outside?
* Can you speak French?
* Have you ever been to Paris?
Wh- Questions (asking for specific information):
* Who is your favorite author?
* What is your favorite color?
* When does the movie start?
* Where did you go on vacation?
* Why are you late?
* How did you get here?
Tag Questions:
* It's a beautiful day, isn't it?
* You like pizza, don't you?
* They're coming tomorrow, aren't they?
* We should go to the beach, shouldn't we?
* He won't be late, will he?
Alternative Questions:
* Do you want coffee or tea?
* Would you like to go to the movies or stay home?
* Is the book red or blue?
* Are you going to the mall or the park?
Indirect Questions:
* I wonder if they are coming.
* Could you tell me what time the meeting is?
* Do you know where the library is?
* Can you ask him how he's feeling?
Other:
* What's up?
* How are you?
* Who's there?
* Can I help you?
* Do you mind if I...?
Interrogative sentences always end with a question mark (?).