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.