Explanation
Express probability, likelihood or certainty; 'probably', 'maybe', 'I think'.
Formation
Verb-casual + だろう, い-Adjective (drop い) + だろう, な-Adjective + だろう, Noun + だろう
Detailed explanation
The ～だろう grammar point is used to express probability, likelihood, or certainty about a situation or event. It can be translated as 'probably', 'maybe', or 'I think' in English. The formation differs depending on whether it is used with a verb, い-adjective, な-adjective, or noun.
Examples
明日は晴れるだろう。
Ashita wa hareru darou.
It will probably be sunny tomorrow.
彼は忙しいだろう。
Kare wa isogashii darou.
He is probably busy.
この本は面白いだろう。
Kono hon wa omoshiroi darou.
This book is probably interesting.
彼女は先生だろう。
Kanojo wa sensei darou.
She is probably a teacher.
Practice
Grammar content sourced from hanabira.org.