شرح درس future simple

Teaching is the most enjoyable thing and what increases your joy the most is when the student understands the information you want to convey to him. When we talk about the simple future tense today, for example, we use will.We are sure that there is something that is likely to happen. I expect it, but there is no conclusive evidence that it will happen. I am just guessing that it may or may not happen.Like the sky will rain:. What is the evidence that it will rain? I don't know, there is none. Unlike using ( going to) when we use it we have evidence that this action is going to happen.

For example

The sky is cloudy .i think it's going to rain.