Me pueden decir ejemplos del acive voice and passive voice como ese acive voice : jhon writtes a bookpassive voice : a book is written by jhon?

1. Someone found a piece of an asteroid in a valley - A piece of an asteroid was found in a valley

2.

A famous archaeologist discovered the ruins of an ancient city - The ruins of an ancient city were discovered by a famous archaeologist

3.

A construction company will cut down the tallest tree in the tropical jungle - The tallest tree in the tropical jungle will be cut down by a construction company

4.

A womam left a bag with $30, 000 in it in a taxi - $30, 000 was left in a bag in a taxi by a woman

5.

Alex has made a mistake - A mistake has been made by Alex.