grammar rules for past perfect continuous tense

Past Perfect Continuous Tense – Detailed Expression

Past Perfect Continuous Tense indicates a past action which started in the past and continued to happen after another action and time in the past.…

6 years ago

Past Perfect Continuous Tense in English

Past Perfect Continuous Tense in English Past Perfect Continuous Tense indicates a past action which started in the past and continued to…

7 years ago