SIMPLE PRESENT
Somebody cleans the room every dat. - strona czynna
The room is cleaned every day. - strona bierna
SIMPLE PAST
Somebody cleaned the room yesterday. - strona czynna
The room was cleaned yesterday. - strona bierna
FUTURE SIMPLE
Somebody will clean the room tomorrow. - strona czynna
The room will be cleaned tomorrow. - strona bierna
PRESENT PERFECT
The room looks nice. Somebody has cleaned it. - strona czynna
The room looks nice. It has been cleaned. - strona bierna
PAST PEREFCT
The room looked nice. Somebody had cleaned it. - strona czynna
The room looked nice. It had been cleaned. - strona bierna
Konstrukcja:
Odmiana "to be" w danym czasie III forma czasownika dla nieregularnych lub końcówka -ed dla regularnych.