Present Perfect Continuous Tense

I have been singing

How do we make the Present Perfect Continuous Tense?

The structure of the present perfect continuous tense is:

subject	+	auxiliary verb	+	auxiliary verb	+	main verb
		have has		been		base + ing

Here are some examples of the present perfect continuous tense:

	subject	auxiliary verb		auxiliary verb	main verb
+	I	have		been	waiting	for one hour.
+	You	have		been	talking	too much.
-	It	has	not	been	raining.
-	We	have	not	been	playing	football.
?	Have	you		been	seeing	her?
?	Have	they		been	doing	their homework?