IS DONE…. WAS DONE

PASSIVE VOICE

The office is cleaned every day.

The office was cleaned yesterday.

·         Compare active and passive voice:

Somebody cleans the office every day. (Active)

The office is cleaned every day. (Passive)

Somebody cleaned the office yesterday. (Active)

The office was cleaned yesterday. (Passive)

·         The passive is:

Simple present            : am/is/are + v3 (past participle)

Past tense                    : was/were + v3 (past participle)

The past participle of regular verb is –ed (cleaned/damaged, etc)

For a list of irregular past participles (done/built/taken, etc).

ü  Butter is made from milk.

ü  Oranges are important into Britain.

ü  This house was built 100 years ago.

ü  These houses were built 100 years old.

·         Passive + by…..

ü  We were woken up by a loud noise. (= the noise woke us up)

ü  The telephone was invented by Alexander Bell in 1876.

ü  My brother was bitten by a dog last week.

Taken from: Essential Grammar in Use