e.g. begin-begun
have/ has+ done
1. I have just finished the exercise.
2. She hasn't handed it in yet.
3. We have already waited for long.
4. I haven't been there for 3 years/
since 3 years ago.
e.g. He ______ already read the news.
We ______already read the news.
e.g. Thank you for your patience.
being patient with me.