If you want to add extra information that is not important to a sentence, the information should have a comma before and after it.
The giraffe, which comes from Africa, has a very long neck.
• Audrey, who is very tired, is going on holiday next week.
• Our hotel, which only had eight rooms, was fantastic.
Remember: Extra information with commas.
Re-write the sentences CAREFULLY and add commas where necessary.
Ms Riley who was a journalist was found dead in her bed.
Ms Riley, who was a journalist, was found dead in her bed.
My colleague who is a great reader told me about a book he'd just read.
My colleague, who is a great reader, told me about a book he'd just read.
I gave the money which I found to my wife.
The phrase . . . which I found . . . is necessary to tell us which money.
The man who you met yesterday lost all his money last year.
Teachers who teach English should get more money.
The phrase . . . who teach English. . . is necessary to tell us which teachers.
Skype which started in 2003 is a great way to speak with your friends.
Skype, which started in 2003, is a great way to speak with your friends.
Websites which help you learn English are often covered with annoying adverts.
The boat, which is blue and white, is floating.
The chair, which is red, is very small.
When to use a comma before and or but?