In English grammar, the present progressive is a verb construction comprised of a present form of the verb "to be" plus a present participle that usually conveys a sense of ongoing action at the present time. This construction is also known as the durative aspect. The present progressive is used to describe an activity currently in progress. For example, "I am reading right now." Notice this construction is distinct from the simple present ("I read"), the present perfect ("I have read"), and the present perfect progressive ("I have been reading"). The present progressive also occurs when a speaker is referring to things that are planned for the future, e.g, "I am reading at the event tomorrow."
I keep coming across present progressive uses that I can't explain. Example (from Longman Dictionary): "Sticking to a healthy diet always makes you feel that you're missing out". Missing out? Why the present continuous? "Missing out" right now? "Missing out" temporally around the time of speaking? Prearranged?
Could anyone please tell me difference between use of be,,, being and been as a state of being,,,,i want to be a doctor,,being a health conscious i choose healthy choices..he has been my friend... what's difference between these sentences why we need to use these distinct context... thanks in advance