WHATEVER, WHENEVER, WHEREVER, WHOEVER...

Whatever, whenever, wherever, whichever, whoever are used as follows :

Whatever = anything or everything; regardless of what
- Whatever you do, don't forget your grandmother's birthday.
- Don't get upset whatever your mother says.
Whenever = every time; at any time; regardless of when
- Whenever we organize a picnic it rains.
- He interrupts me whenever I start to speak.
Wherever = everywhere; no matter where; regardless of where
- Wherever you go you'll always find someone who speaks English.
- She'll be happy wherever she decides to live.
Whichever = the person or thing which; no matter which; regardless of which
- Wear whichever shoes are the most comfortable.
- Take whichever one you want.
Whoever = the person who; regardless of who
- Whoever comes with you is welcome.
- Whoever opened the gate didn't close it.