 The usages for the future are as simple as follows. We have spontaneous decisions, I'll go with you. Somebody has just told you that they're going to go to the store, you need some things in the store as well, and you immediately decide and say, I'll go with you. We have predictions without evidence. It'll rain tomorrow. There might not be a cloud in the sky, but I still could make a prediction that it will rain tomorrow. Future facts, I'll be 21 next year. I'm 20 now, but in the future, I'll be 21. We also have promises and threats. Often heard at weddings, I'll love you forever. There are more usages, which we haven't highlighted here. These are the four most common for the additional usages. Please look them up in your materials.