How are they formed?

We use them with:

some-

any-

every-

no-

We use somebody / something / somewhere mainly in positive sentences.

•   We can find somebody who can help.

    There's something in the bag.

  Let's go somewhere this weekend.

We use anybody / anything / anywhere in the same way, but for questions and negative sentences

·       I can't find anybody who can help.

·       Is there anything in the bag?

·       We didn't go anywhere this weekend.

Exceptions:

We also use anybody / anything / anywhere with sentences that have a negative feeling.

·       There is hardly anybody here.

·       She ate hardly anything.

·       We spent the weekend at home without going anywhere.

We can use somebody / something / somewhere in questions when they are offers or requests or when we think the answer is yes.

·       Are you looking for something? (= I think you're looking for something.)

·       Would you like something to eat?

We often use anybody / anything / anywhere after 'if'.

·       If anybody would like a coffee, tell me now!

·       If anything is wrong, you need to phone the reception.

·       If there's anywhere that you don't want to go, please send me an email.

No- Nobody = not anybody. Nothing = not anything. Nowhere = not anywhere.

·       I don't know anyone who's coming = I know nobody who's coming.

·       There isn't anything here = there's nothing here.

·       She doesn't want to go anywhere = she wants to go nowhere.

Usually the sentence with 'no' is stronger and more emphatic

Every- Everybody = all the people. Everything = all the things. Everywhere = all the places. These can be used in positive sentences, negative sentences and questions.

·       I think that she has been everywhere in Europe.

·       He doesn't know everything.

·       Do you know everybody here?

We use a singular verb after an indefinite pronoun:

Everybody loves Sally.

Everything was ready for the party.

When we refer back to an indefinite pronoun, we normally use a plural pronoun:

Everybody enjoyed the concert. They stood up and clapped.

I will tell somebody that dinner is ready. They have been waiting a long time.