tymi

In a sentence

• Ona interesuje się tymi książkami.

  She is interested in these books.

  The word "tymi" is used here as an instrumental case plural form of "te" (these), corresponding to the noun's grammatical context (books being the subject of interest).

• Chcę porozmawiać z tymi osobami.

  I want to talk with these people.

  In this sentence, "tymi" serves as an instrumental case plural form of "te" (these), which identifies the specific group of people in the context of the sentence.

• Pomagamy tymi narzędziami w warsztacie.

  We are helping with these tools in the workshop.

  Here, "tymi" again is in the instrumental case plural form of "te" (these), agreeing with its associated noun (tools) as per its action in the sentence.