Grammar.future perfect continous form of this sentence

We use a continuous tense to express an action which is happening continuously at some point in time. The opposite of a continuous tense is therefore a perfect tense ('perfect' means that the action has been completed). I am doubtful, therefore, whether there IS such a thing as a 'perfect continuous' because either an action is/was/will be happening at the moment we are speaking of or the action has been completed (or will have been completed) at that time. If you were taking part in an eating contest where contestants ate continuously for several hours, you might say "By 9am tomorrow I shall have been eating for 10 hours [continuously]." "I am eating" = present continuous "I have been eating" = past continuous (?) or "I was eating" = 'imperfect tense' "I ate" or "I have eaten" = simple past tense and past perfect tense, respectively "I shall have been eating" = past continuous expressed as seen from a point in the future = 'future past continuous' There is a point where names for tenses become merely names and tend to confuse rather than enlighten! In any case, you will find that different grammarians give different names to tenses and moods, so that the terms which I use may be those which I learned over 50 years ago and may not be the current ones!

Tomorrow morning I will have been eating my breakfast all the best, urban