Sometimes we ask a question with rising intonation at the end of the sentence.
When we write the question it looks like a normal sentence, but from the intonation (rising at the end) and the situation (pragmatics) we can tell that it is a question. Compare these two sentences below.
You have had breakfast.
You have had breakfast?
Here is an example from a real conversation. “Your parents are from Manila also?” Click the link and listen to the conversation. Find the question and the answer.
Here is another example. “You are worried about the rise of Japanese militarism?” Click the link to listen to the conversation. Find the question and find the answer.
Now click the link and listen to a real conversation between three people. Write down all the intonation questions you can find in the text. (The Real Hannibal)