Passive voice
Defining Relative clauses
Relative pronouns
Active voice
100

 Somebody has drunk all the milk!

All the milk has been drunk

100

I sent an email to my brother (my brother lives in Australia)

 I sent an email to my brother who lives in Australia

100
  1. Dublin, _______ is the capital of Ireland, is my favourite city.

which

100

This morning the burglar was arrested by the police.

This morning the police arrested the burglar.

200

A workman will repair the computer tomorrow.

The computer will be repaired tomorrow

200

The waiter was rude (the waiter was wearing a blue shirt)

The waiter who was wearing a blue shirt was rude

200
  1. Buckingham Palace, _______ the Queen of England lives, is in the centre of London.

where

200

One type of air pollution is caused by hydrocarbons.

Hydrocarbons cause one type of air pollution.

300

James might cook dinner.

Dinner might be cooked by James

300

She loves books (the books have happy endings)

She loves books that have happy endings

300
  1. Russell Crowe,______ starred in Gladiator, was born in New Zealand.

who

300

The cookies were stolen by the Mad Hatter.

The Mad Hatter stole the cookies.

400

At six o'clock someone was telling a story.

At six o'clock a story was being told

400

The television was stolen (the television was bought 20 years ago)

The television that was bought 20 years ago was stolen

400
  1. Emily, _______ brother is a singer, is in my English class.

whose

400

It was decided by the court that the contract was invalid.

The court decided that the contract was invalid.