Everything: Her şey
When preparing for a trip, you want to make sure you have all your belongings. To talk about "everything," use her şey.
Notice the spelling: şey (thing) is always written as a separate word in Turkish. Just like in English, her şey is grammatically singular and takes singular verbs.
Nothing: Hiçbir şey and Double Negation
To say "nothing," use hiçbir şey.
Just like with kimse (no one), Turkish requires double negation when using this word. If you use an action verb, the verb itself must be negative. If you are describing a state of being, you must pair it with a negative word like yok (there is not) or değil (not).
Somewhere: Bir yer
Turkish expresses "somewhere" using bir yer (literally: a place).
Because it represents a physical location, you will usually attach a spatial case ending to it, depending on the verb:
- bir yerde: in/at somewhere (locative case, for stationary location)
- bir yere: to somewhere (dative case, for movement toward)
You can easily combine this with başka (other) to say "somewhere else" (başka bir yerde).
Putting It Together
Keep an eye out for how these indefinite pronouns can take case endings just like regular nouns. For example, when you are searching for "everything," it takes the accusative case because it is a specific direct object (her şeyi arıyor).