Published grammar points
Simple comparisons with 比
Use A 比 B + adjective to compare two people or things.
过 for experience
Add 过 after a verb to say that someone has had an experience before.
还是 in a choice question
Use 还是 to offer two alternatives in a direct question.
Why and because
Use 为什么 to ask for a reason and 因为 to give a simple reason.