Ingles

PRESENT PERFECT, PAST PERFECT and FUTURE PERFECT
Passive form:
have/has been + past participle
had been + past participle

Present Perfect Active:

I have mailed the postcard.

Jasonhas mailed the postcards.
Present Perfect Passive:

The postcard has been mailed by me.

The postcards have been mailed by Jack.

Past Perfect Active:

Steven Spielberg had directed themovie.
Penny Marshall had directed those movies.
Past Perfect Passive:

The movie had been directed by Steven Spielberg.
The movies had been directed by Penny Marshall.

Future PerfectActive:

John will have finished the project next month.
They will have finished the projects before then.
Future Perfect Passive:

The project will have beenfinished by next month.
The projectswill have been finished before then.

PRESENT/FUTURE MODALS

The passive form follows this pattern:

modal + be + past participle

WILL / WON'T (WILL NOT) Active:

Sharon will invite Tomto the party.

Sharon won't invite Jeff to the party.

(Sharon will not invite Jeff to the party.)
WILL / WON'T (WILL NOT) Passive:

Tom will be invited to the party by Sharon.

Jeffwon't be invited to the party by Sharon.

(Jeff will not be invited to the party by Sharon.)

CAN / CAN'T (CAN NOT) Active:

Mai can foretell the future.

Terry can't foretell the future.(Terry can not foretell the future.)
CAN / CAN'T (CAN NOT) Passive:

The future can be foretold by Mai.

The future can't be foretold by Terry.

(The future can not be foretold by Terry.)MAY / MAY NOT and

MIGHT / MIGHT NOT Active:

That company may offer Katya a new contract.

That company might offer Katya a new contract.

The lazy students may not do the homework.The lazy students might not do the homework.
MAY / MAY NOT and

MIGHT / MIGHT NOT Passive:

Katya may be offered a new contract.
Katya might be offered a new contract.

The homework...