Whose and who’s are homophones that are often confused by learners and native speakers of English alike. Here is a short guide to help understand the difference between them.
whose
Whose is a determiner. You use whose to ask or say who something or someone belongs or relates to.
I know whose fault it is.
Whose dog is that?
We live next door to a couple whose children have all left home.
Who’s
Who’s is a contraction, meaning that it is a shortened form of ‘who is’ or `who has’. The apostrophe replaces the missing letters when the two words are combined.
Who’s there?
Who’s already watched this film?
For further information on English Usage, visit: https://grammar.collinsdictionary.com/english-usage
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