(1) You must go. = You have to go.
(2) You must not go ≠ You don't have to go.
次の文を have to 〜か has to 〜を使って書きかえなさい。
Ellen must make breakfast.
( )内の指示に従って、次の文を書きかえなさい。
My father has to work on Saturday. (「〜する必要はない」の意味に)
あなたは明日何時に起きる予定ですか?
You must hurry to the station. (反対の意味の文に)