Cách sử dụng
The word 'if' is usually used when we talk about something that may or may not happen. It is often used to express a condition or possibility. For example, "If it rains, we will stay inside" means that we will only stay inside if it actually rains. Another example is "If I am hungry, I will eat" which means that I will only eat if I feel hungry. So, basically, 'if' is used to express a hypothetical or uncertain situations.