Why is the underlined form used?
to start:Irish warriors
started to use swords like this as well.
Irish warriors will start to use swords like this as well.
to study; to live:
Researchers who studied the body found out that this man lived around 2,000 years ago.
Researchers who are studying the body found out that this man is still alive.
to cook:
People cooked their meals in the kettle.
People cook their meals in the kettle.