Who, which and that

Who

Who is used for people. In casual English that can be used.

The boy who sang.
Only men who are wearing neckties are allowed to enter.
She's the one who won the prize.

Which and that

Which and that are used for things and groups.

Penguins, which can't fly, live in the Southern Hemisphere.
He never watches movies which have subtitles.
Cars which have four doors.

Using comas with which and who

Use comas before who and which when the clause can be taken out without changing the meaning of the sentence. Comas are for extra information.

"My daughter, who was born in Venice, is 17."

In the above sentence, "who was born in Venice" is extra information and can be removed: "My daughter is 17."

Now choose the correct words to complete each sentence:

• 1) The old woman ___ lives next door.
  
  which
  who
  
  
• 2) John, ___ you met last night, works for Microsoft.
  
  who
  which
  
  
• 3) Wines ___ come from France are expensive.
  
  which
  who
  
  
• 4) Students ___ don't do their homework must see the principal.
  
  who
  which
  
  
• 5) Watches ___ have leather straps are popular.
  
  that
  who
  
  
• 6) Dogs ___ are well-trained make better pets.
  
  that
  who
  
  
• 7) People ___ eat healthy food live longer.
  
  who
  which