We do not use will to say what somebody has already arranged or decided to do:Diane is working next week. (not Diane will work)Are you going to watch anything on TV this evening? (not Will you watch)For 'is working' and 'Are you going to ... ?', see Units 19-20.But often, when we talk about the future, we are not talking about what somebody has decided to doFor exampleKate is doing an exam next week. Chris andJoe are talking about itYes, she'll pass easilyDo you thinkKate will passthe exam?She'll pass does not mean she hasdecided to pass' Joe is saying whathe knows or believes will happenHe is predicting the future, When we predict a future happeningor situation, we use will/won'tCHRISSome more examples:They've been away a long time. When they return, they'll find a lot of changes here:"Where will you be this time next year?' 'll be in JapanThat plate is hot. If you touch it, you'll burn yourselfTom won't pass the exam. He hasn't studied hard enoughAnna looks completely different now. You won't recognise herWhen will you get your exam resultsWe often use will (ul) withprobablyI'm sure(1) thinkI don't thinkI wonderI'll probably be home later tonightDont worry about the exam I'm sure you'll passDo you think Sarah will like the present we bought herI don't think the exam will be very difficultI wonder what will happenAlter I hope we generally use the present will also possThope Kate passes the exam corl hope Kate will passI hope it doesn't rain tomorrow2​