I amworking tomorrow – present continuous: an arrangement in the near future, already prepared and/or organised
I willwork –future simple: neutral future or future facts / instant decision (at the moment of speaking) / prediction based on what we know, think, assume
I am going tobuy this – to be going to: a future intention, i.e you have decided to do something in the future / a future prediction based on evidence
I will beworking – future continuous: something will have started before some point in the future and will probably carry on after it / future without intention, i.e. something that will happen in the ordinary course of events.
I will haveworked – future perfect: something will be completed before a specific time in the future
I will have beenworking – future perfect continuous: an action continuing for a period of time up until a point in the future, the emphasis is on the length of time
exercises: 4 future forms or more
exercise 1: fill in the correct verb form of will, to be going to and the present continuous
exercise 2: choose will, to be going to, present continuous or the simple present
exercise 3: multiple choice exercise for practising future forms
exercise 4: two exercises for practising will, going to, future perfect, present continuous and the simple present
exercise 5: multiple choice exercise for practising various future forms (plus explanation (in)correct answer)
exercise 6: multiple choice exercise for practising various future forms (plus explanation (in)correct answer)