Understanding grammar is important.
It's important to understand grammar.
Learning English is not easy.
It's not easy to learn English.
To drive so fast is dangerous.
It's dangerous to drive so fast.
To be able to speak a foreign language is often helpful.
It's often helpful to be able to speak a foreign language.
Studying grammar is not interesting for a lot of students.
It's not interesting for a lot of students to study grammar.
Learning new words every day is important.
It's important to learn new words every day.
Traveling in foreign countries is interesting.
It's interesting to travel in foreign countries.
To pay so much money for a car that is old is foolish.
It's foolish to pay so much money for a car that is old.
Studying with Mr. Nathan is very rewarding.
It's very rewarding to study with Mr. Nathan.
To blame Rocky for that mistake is unfair.
It's unfair to blame Rocky for that mistake.