Hey there! Today, I want to describe the difference between "when" and "if." Let’s start with "if." "If" is used to express uncertainty. For example: If it is not raining, we will go outside. This shows a possibility it might rain, or it might not. On the other hand, we have "when." "When" is used to indicate certainty. For example: When you start learning English, you will be able to speak fluently. This shows that starting to learn English is certain, and the result will be that you can speak English fluently. So, that’s the key difference between "if" and "when." Write your thoughts in the comments!