520
Past Perfect Continuous Tense
Method
Subject + had been + verb(First Form) + ing + object
Example:
They had been talking for more than one hour.
Kate had been teaching at school since May.
Negative Sentences
Method
Subject + had not been + verb(First Form) + ing + object
Example:
They had not been talking for more than one hour.
Kate had not been teaching at school since May.
Interrogative Sentences
Method
Had + subject + been + verb(First Form) + ing + object
Example:
Had they been talking for more than one hour?
Had Kate been teaching at school since May?
