Maybe, no, my country doesn’t have a castle. 1. If I use ‘the’ in front of ‘same’, it is because of collocation and specific things. Right? 2. It is because of candy. -> Is this sentence structure okay? 3. I saw a star. / I saw the star. -> I can use both. Right? 4. What is the difference between ‘instead’ and ‘instead of’? 5. What is the difference between ‘should’ and ‘must’?

Hi, Minju! Thank you for always doing your best in the class. Your questions show that you are really paying attention to our lessons. Let us talk more next time.

--Teacher Anji

Maybe, no, my country doesn’t have a castle. >> Maybe, there are no castles in my country. >> There are not castles in my country.

1. If I use ‘the’ in front of ‘same’, it is because of collocation and specific things. Right?

>> CORRECT
2. It is because of candy.
-> Is this sentence structure okay?

>> It is grammatically correct. Just make sure that there is a complete context during the conversation.
3. I saw a star. / I saw the star.
-> I can use both. Right?

>> Yes, you can but they have different meanings. 

I saw a star. = any star 

I saw the star. = specific star
4. What is the difference between ‘instead’ and ‘instead of’?

>> Instead is used by itself, often at the end of the sentence. (example: I will have tea instead.)

>> Instead of is used with a noun or noun phrase to show substitution. (example: I will have tea instead of coffee.)

5. What is the difference between ‘should’ and ‘must’?

>> Should: Suggestion or advice (not required). ( You should drink more water. = You may or may not drink more water,depends on you)

>> Must: Necessity or obligation (required). ( You must drink more water. = You have to do it. It's an obligation.You don't have a choice.)