Perfect Continuous [Present, Past, Future and Past Future tense]

Perfect Continuous

#Present Perfect Continuous
Verb: Walk

E.g.:
[+] That robot has been walking for 5 hours usually the owner calls him.
[-] That robot has NOT been walking for 5 hours usually the owner calls him.
[?] Has that robot been walking for 5 hours usually the owner calls him?
[-, ?] Has that robot NOT been walking for 5 hours usually the owner calls him?

#Past Perfect Continuous
Verb: Walk


[+] That robot had been walking for 5 hours usually the owner calls him.
[-] That robot had NOT been walking for 5 hours usually the owner calls him.
[?] Had that robot been walking for 5 hours usually the owner calls him?
[-, ?] Had that robot NOT been walking for 5 hours usually the owner calls him?

#Future Perfect Continuous
Verb: Walk

[+] That robot will have been walking for 5 hours usually the owner calls him.
[-] That robot will have NOT been walking for 5 hours usually the owner calls him.
[?] Will that robot have been walking for 5 hours usually the owner calls him?
[-, ?] Will that robot have NOT been walking for 5 hours usually the owner calls him?

#Past Future Perfect Continuous
Verb: Walk
[+] That robot would have been walking for 5 hours usually the owner calls him.
[-] That robot would have NOT been walking for 5 hours usually the owner calls him.
[?] Would that robot have been walking for 5 hours usually the owner calls him?
[-, ?] Would that robot have NOT been walking for 5 hours usually the owner calls him?

Exercises!

Let's build your own sentences using perfect continuous tense!

- Live

- Work

- Teach

- Studying

- Get married