Hi! Does anyone know, why in all of the textbooks for learning english and infographics about english tenses on the internet, in future continuous there's always only given the option for using "will", and building sentences with "be going to" is omitted? (like for example: He is going to be doing it.) Both ways of making a sentence are correct, and have slight difference in meaning, so is there any reason why in all the stuff for english beginners "be going to" is not mentioned in future continuous tense?