Past perfect s and c.

http://www.youtube.com/watch?v=9_JG6d8JKjk

Read the rules in needed and practice on grammar webpages. You can find many in the internet.

http://www.e-grammar.org/past-perfect-simple-continuous/test1-exercise1/

Past Perfect - Use

1) Together with the Simple Past

When two past actions are combined - the first action, which was completed before the second one began, is put into Past Perfect.
Mary had read the book before she watched a film.
After Amy had gone home it started to rain.

2) the past equivalent of the Present Perfect

He had played hockey.

 

Present Perfect	Past Perfect
The bike is new. I've bought it.	The bike was new. I had bought it.

Past Perfect - Simple Past	Simple Past - Simple Past
The match had started before he arrived.	The match started when he arrived.

Past Perfect Progressive/Continuous

Use

how long something had been happening before something else happened

Form

had + been + infinitive + ing

Example

I had been waiting for Susan for 2 hours when she arrived.


Past Perfect Passive

Passive (Simple Forms)
Simple Present	I am driven
Simple Past	I was driven
Present Perfect	I have been driven
Past Perfect	I had been driven
will-future	I will be driven
Future Perfect	I will have been driven
Conditional I	I would be driven
Conditional II	I would have been driven