Relative clauses - defining or non-defining?

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

I have three brothers.

• My brother who lives in Sidney came to see me last month.

• My brother, who lives in Sidney, came to see me last month.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

I have one sister.

• My sister who is 25 years old spent her holiday in France.

• My sister, who is 25 years old, spent her holiday in France.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

Bob's mum has lost her keys.

• Bob's mum who is a musician has lost her car keys.

• Bob's mum, who is a musician, has lost her car keys.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

My friend Jane moved to Canada.

• My friend Jane whose husband is Canadian moved to Canada last week.

• My friend Jane, whose husband is Canadian, moved to Canada last week.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

I am a shoe fanatic.

• The shoes which I bought yesterday are very comfortable.

• The shoes, which I bought yesterday, are very comfortable.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

Mr Robinson is very famous.

• Mr Robinson whom I met at the trade fair is a famous inventor.

• Mr Robinson, whom I met at the trade fair, is a famous inventor.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

Tamara has two cats. Both of them are black.

• Tamara's two cats which can play outside are black.

• Tamara's two cats, which can play outside, are black.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

Kevin has four cats. Two of them are black.

• Kevin's two cats which are black can play outside.

• Kevin's two cats, which are black, can play outside.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

We are on holiday. Yesterday we visited a church.

• The church which we visited yesterday is very old.

• The church, which we visited yesterday, is very old.

Study the situation and then decide whether the following relative clause is defining or non-defining.

defining – no commas

non-defining – commas

We are on holiday. Yesterday we visited a church.

• St. Mary's Church which we visited yesterday is very old.

• St. Mary's Church, which we visited yesterday, is very old.