判断・推量N3
〜ことはない
there is no need to... / don't have to...
Structure
V-辞書形 + ことはない
Explanation
Indicates that there is no need to do something, "there is no need to...". Attaches to the dictionary form. Can also mean "it won't happen".
Examples
心配することはありません。きっとうまくいきます。
There's no need to worry; it'll work out.
そんなに急ぐことはないよ。まだ時間があるから。
No need to hurry; there's still time.
Note
ことはない means "no need to" or "it won't happen". In speech ことはないよ reassures the other person.
Related Grammar
〜必要がない〜なくてもいい