سلام
امیدوارم توضیحات زیر ابهام تون رو برطرف کنه:
Someone , somebody , something , somewhere
Someone , somebody ,something , somewhere are indefinite pronouns. They function in a similar way to some . We use them in affirmative clauses and in questions expecting a particular answer. We can use them to refer to both general and specific people or things. We use them with a singular verb:
I know someone who gives piano lessons. (a specific person)
We often use the plural pronoun" they" to refer back to (singular) someone or somebody when we do not know if the person is male or female:
Never judge someone by the way they look. (or Never judge someone by the way he or she looks .)