whose VS who's

09-02 and 09-07,

Who knows the difference between who's and whose (one of your grammar objectives from New Headway Plus Elementary Unit 11)? Here's a lesson whose time has come.


Who's
Who's is a contraction of who is or, less commonly, who has.

For example:

Who's watching TV?

Do you know who's going to speak?

Who's ready to go?

Who's in the kitchen?

Who's this?

Who's already eaten?


Whose
Whose is the possessive of who.

For example:

Whose book is this?

Do you know whose car this is?

I know a woman whose kids study there.

Whose side are you on?

An idea whose time has come.


Basically:

The apostrophe for the who's here is a CONTRACTION - not to show possession.

If you can replace the word with who is or who has, use who's. If not, use whose.