It is impolite to talk when your partner is participating.
Talking when your partner is participating is impolite.
It wasn't hard to pass the test.
Passing the test wasn't hard.
Giving a present with your left hand is impolite.
It is impolite to give a present with your left hand.
learn new vocabulary / important (It+be+adjective+infinitive+complement)
It is important to learn new vovabulary.
study in a different country / not easy (It+be+adjective+infinitive+complement)
It is not easy to study in a different country.
opposite of HONEST
DISHONEST
Arriving late to a meeting is disrespectful.
It is disrespectful to arrive late to a meeting.
Practicing my English every day is important for me.
It is important for me to practice my English every day.
eat with a fork and knife / polite (gerund+complement+be+adjective)
Eating with a fork and knife is polite.
similar word for PLEASANT
FRIENDLY