Future Perfect Continuous (I will have been doing)

-លីងទៅកាន់វីដេអូអំពី Future with 'will'    • Future with 'Will' អនាគតកាលដោយប្រើwill   -លីងទៅកាន់វីដេអូអំពី ប្រៀបធៀប will និងbe going to    • Will VS Be going to ប្រៀបធៀប will និង be g...   -លីងទៅកាន់វីដេអូអំពី Future with 'be going to' (អនាគតកាលដោយប្រើbe going to)    • Future with 'Be going to' ការប្រើ be going...   -លីងទៅកាន់វីដេអូអំពី Future Continuous    • Future Continuous អនាគតកាលកំពុងបន្ត   -លីងទៅកាន់វីដេអូអំពី Future Perfect Continuous    • Future Perfect (I will have done): Forms a...   Form: S + will + have been + Ving … . -They will have been working here for three years by the end of the month. -They will not have been working here for three years by the end of the month. -Will they have been working here for three years by the end of the month? Usage: We use the Future Perfect Continuous to show how long an activity has been in progress from the starting point up to a particular time in the future. -I will go to bed at 10 pm. John will get home at midnight. At midnight I will be sleeping. By the time John gets home, I will have been sleeping for 2 hours. -Sue will start cleaning the whole house at 11 am and it will take more than an hour. Her husband will arrive at 11:30 am. By the time her husband arrives, Sue will have been cleaning the house for 30 minutes. -On the 10th on this month, I will have been living here for exactly two years. With some verbs (live, work, teach, study … ), we can use either the Future Perfect Continuous or Simple. -When Professor Lee retires next month, he will have been teaching for 45 years. -When Professor Lee retires next month, he will have taught for 45 years. Most state verbs can’t be used in the continuous tense. -Next year I will have been married for 15 years. -By the time we leave high school, we will have known each other for five years.