Intonation
Do you like taking this class?
Yes/No Question
He's a good student?
Statement
Are there one or two assignments?
Choices
Did you finish the experiment?
Answer: Well, I suppose that...
You like microbiology, don't you?
Questions tags that show uncertainty and require an answer (real questions)
Can you place the lab sample here?
Command
What kind of test tubes do you have?
List
You couldn't find the samples?
Answer: I don't quite remember...
Have you met the new student?
Yes/No Question
Whose lab coat is this?
Wh- Question
Do you need two or three trials?
Choices
Do you want to go to the football game?
Answer: Perhaps we could visit the stadium?
We've finished the group project, haven't we?
Questions tags that show uncertainty and require an answer (real questions)
He thinks he has the perfect method, doesn't he?
Question Tags that are statements requesting confirmation rather than questions.
Was the result positive, negative, or neutral?
List
How do you think we should finish the experiment?
Answer: Should we start saving the cells?
What's the best way to get there?
Is it a yes/no question, or a question tag that shows uncertainty and requires an answer?
I think you're new here, aren't you?
What type is it (statement, command, wh- question, or a question tag that is a statement requesting confirmation)?
Should we leave soon?
Is it a choice or list?
Who is the most important person to you?
Is it produced with more hesitation/reluctance or politeness-doubt-uncertainty?