Comparativetypolog y

Past Perfect denotes an action in the past which happened before another action in the past.
e.g.: When I arrived at the station the train had already gone.

- Мен вокзалга етиб келганимда поезд алла=ачон жынаб кетган экан.

Where (When I arrived at the station - Мен вокзалга етиб келганимда) denotes a definite time in the past.

Compare the use of the Past Perfect and Past Simple in the following sentences:

When I got home, John cooked a meal. (First I got home, then John cooked).

-Мен уйга етиб келганимда(н кейин) Жон ов=ат пиширди.

When I got home, John had cooked a meal.( John cooked a meal before I got home)

- Мен уйга етиб келганимда Жон ов=ат пишириб =ыйган экан.

Future Perfect expresses an activity that will be completed before a definite time in future. In English this notion is expressed by means of the combination ‘will (shall) have -PII’ of the notional verb. In Uzbek it is rendered with the help of ‘suffixes ‘-б, -иб’ & the auxiliary verb ‘- был(мо=).’
Cf.: I shall have finished my homework by 4 o’clock.

- Мен уй ишларимни соат 4 гача тугаллаб быламан.