Example of Future Perfect Continuous Tense


Affirmative
  1. I will have been sleeping for two hours by the time my brother gets home because he will get home at midnight
  2. You will have been sleeping for two hours by the time your brother gets home because he will get home at midnight
  3. We will have been sleeping for two hours by the time our brother gets home because he will get home at midnight
  4. They will have been sleeping for two hours by the time their brother gets home because he will get home at midnight
  5. He will have been sleeping for two hours by the time his brother gets home because he will get home at midnight
  6. She will have been sleeping for two hours by the time her brother gets home because he will get home at midnight
  7. My cat will have been sleeping for two hours by the time I buy its food because it will take about two hours 
 Negative
  1. I will not have been sleeping for two hours by the time my brother gets home because he will get home at midnight
  2. You will not have been sleeping for two hours by the time your brother gets home because he will get home at midnight
  3. We will not have been sleeping for two hours by the time our brother gets home because he will get home at midnight
  4. They will not have been sleeping for two hours by the time their brother gets home because he will get home at midnight
  5. He will not have been sleeping for two hours by the time his brother gets home because he will get home at midnight
  6. She will not have been sleeping for two hours by the time her brother gets home because he will get home at midnight
  7. My cat will not have been sleeping for two hours by the time I buy its food because it will take about two hours 
Interrogative
  1. Will I have been sleeping for two hours by the time my brother gets home because he will get home at midnight?
  2. Will you have been sleeping for two hours by the time your brother gets home because he will get home at midnight?
  3. Will we have been sleeping for two hours by the time our brother gets home because he will get home at midnight?
  4. Will they have been sleeping for two hours by the time their brother gets home because he will get home at midnight?
  5. Will he have been sleeping for two hours by the time his brother gets home because he will get home at midnight?
  6. Will she have been sleeping for two hours by the time her brother gets home because he will get home at midnight?
  7. Will my cat have been sleeping for two hours by the time I buy its food because it will take about two hours?
  Negative Interrogative
  1. Will not I have been sleeping for two hours by the time my brother gets home because he will get home at midnight?
  2. Will not you have been sleeping for two hours by the time your brother gets home because he will get home at midnight?
  3. Will not we have been sleeping for two hours by the time our brother gets home because he will get home at midnight?
  4. Will not they have been sleeping for two hours by the time their brother gets home because he will get home at midnight?
  5. Will not he have been sleeping for two hours by the time his brother gets home because he will get home at midnight?
  6. Will not she have been sleeping for two hours by the time her brother gets home because he will get home at midnight?
  7. Will not my cat have been sleeping for two hours by the time I buy its food because it will take about two hours?