Oh My English
Past Perfect Continuous : 
  • I was angry i’d been waiting for 2 hours
  • The road was wet because it had been raining for many hours
 
Present Perfect Continuous : 
  • I’m angry I’ve been waiting for 2 hours
  • It has been raining since last night 

+s after verb 3rd person (singular)
He runs 
She runs
It runs
They run
I run

We run