тих

In a sentence

• У тих лісах чути співи птахів.

  In those forests, one can hear the singing of birds.

  'тих' is used as a demonstrative pronoun modifying 'лісах' (forests), meaning 'those' to refer to specific forests.

• Мені подобається атмосфера тих вечорів.

  I like the atmosphere of those evenings.

  Here, 'тих' functions as a demonstrative pronoun referring to 'вечорів' (evenings), implying specific or previously mentioned evenings.

• Давайте влаштуємо пікнік на тих пагорбах.

  Let's have a picnic on those hills.

  'тих' serves as a demonstrative pronoun connected to 'пагорбах' (hills), specifying which hills are being discussed.