Present perfect tense

Present perfect tense

Formula:
Positive: S + have/has + V3
Negative: S + have/sas Not + V3

Introgative:   Have/has + S + V3

Here are some examples of the present perfect tense:

subject	auxiliary verb		main verb
+	I	have		seen	ET.
+	You	have		eaten	mine.
-	She	has	not	been	to Rome.
-	We	have	not	played	football.
?	Have	you		finished?
?	Have	they		done	it?

When we use the present perfect tense in speaking, we usually contract the subject and auxiliary verb. We also sometimes do this when we write.

I have	I've
You have	You've
He has She has It has John has The car has	He's She's It's John's The car's
We have	We've
They have	They've