1. /It’s better not to know.
Example: ? ? ./It’s better not to know. Don’t tell him about her marriage.
2.? ? ?/ means when the world is in trouble.
Example:?? ? ? ./Did the neighbor steal it? It's incredible.
3. ?/ means when a person is very kind.
Example: ?, ?./You should be very happy to be with him. Isn’t he very kind?
4. ?/When you get unexpected benefits.
Example: , ./You have such a beautiful girlfriend, how can you get such good luck?
5. ? ? / Be fully prepared for a certain purpose.
Example: ? 1, ? ./There is still one year left before the exam, so prepare well. / When you mistakenly believe that the other person will do this and follow your own ideas (including sarcasm).
Example: , ./I won’t marry you, so don’t have sweet dreams.
?/ means that everything has an order.
Example: ? ?/You have to pay attention to the order of things, so why buy a house first? Where is the mother in the hospital bed?
/What to do by the way.
Example: ./On a business trip, I went to see the sea.