Which vs. that - defining and non-defining clauses

Which is the defining clause?

• The cup, which is mine, is in the dishwasher.

• The cup that is mine is in the dishwasher.

Which is the non-defining relative clause?

• The dog that is ours is at the vets.

• The dog, which is ours, is at the vets.

Which is the non-defining relative clause?

• City Park, which we used to go to, has been closed down.

• City Park that we used to go to has been closed down.

Which is the defining clause?

• The house that was built in 1883 has just been opened to the public.

• The house, which was built in 1883, has just been opened to the public.

Which is the non-defining relative clause?

• The trainers, which were £150, have been reduced to £80!

• The trainers that were £150 have been reduced to £80!

Which is the defining relative clause?

• The car, which was bought by my brother, has broken down!

• The car that was bought by my brother has broken down!

Which is the defining relative clause?

• By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.

• To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.

Which sentences describe a defining relative clause?

• Includes essential information

• Use of commas

• Use that

• No use of commas

• Use which

Which sentences describe a non-defining relative clause?

• Includes information that is not essential

• Use of commas

• Use that

• No use of commas

• Use which