Past perfect continuous word order

had + been + infinitive + -ing statement

had + subject + been + infinitive + -ing question

had + not + been + infinitive + -ing negative



English Past perfect continuous exercises

Past perfect continuous  with free online exercises, Past perfect continuous examples and sentences. Online exercises Past perfect continuous,  questions and Past perfect continuous negative sentences.

Online exercises English grammar and courses
Free tutorials and exercises. English grammar easy to learn.