I just had a short conversation class on Cambly with a Saudi Arabian girl. She was very nice, and she's not shy about speaking. This is a great quality to have because many people are afraid to speak freely because they don't want to make too many mistakes. Other students understand that mistakes aren't a big deal, in fact, mistakes are NECESSARY. Those are normally the ones who learn faster and deeper.
She made some common mistakes during our conversations, and I'd like to share one of them with you because you probably get confused with this, too. Whether it's a student on Cambly, italki, or here on Language Galaxy, students from all over the world confuse the same thing: Asking DIRECT and INDIRECT questions.
DIRECT questions are what you would say are 'normal' questions.
How much is it?
INDIRECT questions ask the main question through a sentence form.
Could you tell me how much it is?
I wonder how much it is.
There are different ways to begin an indirect question:
Where did you go? - DIRECT
Could you tell me where you went. - INDIRECT
Ask him where he went for vacation. - INDIRECT
What are weddings like in Saudi Arabia. - DIRECT
Can you tell me what weddings are like in Saudi Arabia? - INDIRECT
Ben: Come pick me up at 9.
Nicole: Ok. Remind me where you live again. - INDIRECT
How much is it? - DIRECT
Do you know how much it is? - INDIRECT
I'd like to know how much it is. - INDIRECT
How did she do that? - DIRECT
I wonder how she did that. - INDIRECT
Indirect questions are often more polite because they are more passive and... well... indirect. That's not to say direct questions are rude. They're not. But, indirect questions are just a bit more polite or formal.