Past Perfect Continuous Verb Tense

What is the structure of the past perfect continuous verb tense?

Subject	+	Auxiliary Verb	+	Auxiliary Verb	+	Main Verb	-
-	-	had	-	been	-	verb + -ing	-

The past tense of the auxiliary verb "have" is used.

The auxiliary verb "to be" always stays in the V3/past participle form (been).

-ing is added to the main verb.

Negative statements - "not" is added between the auxiliary verb "have" (had)

Question - the auxiliary verb "have" (had) comes before the subject

Past Perfect Continuous Verb Tense Chart
	Subject	Auxiliary Verb	-	Auxiliary Verb	-
+	I	had	-	been	studying	really all night. I was really tired.
	We	had	-	been	cleaning	all week, before my mother came to visit.
	She	had	-	been	playing	outside for hours. She needed to take a shower.
-	I	had	not	been	sleeping	for the last few days, so I went to the doctor.
	You	had	not	been	studying	very much before your test, that is why you failed.
	He	had	not	been	eating	for the last few day. She lost a lot of weight.
?	Had	I	-	been	making	a lot of noise, while you were sleeping?
	Had	it	-	been	raining	all night, because it is all wet outside.?
	Had	she	-	been	cleaning	the house last week, it looks really clean?

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