Yes/No Questions:
* Are you going to the party?
* Did you finish your homework?
* Is the weather good today?
* Will you be here tomorrow?
* Have you ever been to Paris?
Wh- Questions (using question words like who, what, when, where, why, how):
* Who is coming to dinner?
* What is your favorite color?
* When will the movie start?
* Where did you go yesterday?
* Why are you sad?
* How did you get here?
Tag Questions:
* It's a nice day, isn't it?
* You like pizza, don't you?
* She's not coming, is she?
* They're happy, aren't they?
Indirect Questions:
* Could you tell me what time it is?
* I wonder if they're coming.
* I'd like to know how much it costs.
Note: Interrogative sentences always end with a question mark (?).