Do people still use "Future Perfect Tense" & "Future Perfect Continuous Tense" these days?
In modern English, are these two tenses are still in use? I hardly see them in both conversation and writing. However, they still exist in grammar book.
Example for perfect tense:
A: How long have you studied English?
B: I will have studied English for ten months next month.
It sounds old fashioned so I believe there is another way to say this like "I've studied English for almost ten years."
Examples for perfect continuous tense I found in grammar book:
1. I will have been eating breakfast for 30 minutes at 8 o’clock.
2. You will have been waiting for two hours when the plane arrives.
I don't think anyone will ever speak like 1., but no. 2, it's still natural.