tut

In a sentence

• Er tut jeden Morgen Sport.

  He exercises every morning.

  Here 'tut' is the third-person singular of 'tun,' indicating the action of exercising.

• Es tut mir leid.

  I am sorry.

  In this phrase, 'tut' is part of a fixed expression 'Es tut mir leid,' meaning 'I am sorry.'

• Sie tut so, als ob sie krank wäre.

  She acts as if she were sick.

  Here 'tut' represents the third-person singular of 'tun,' expressing the action of pretending or acting.