ことはない: There’s no need to.../X will never happen

Introduction

Hey, there's no need to panic, today's lesson is very chill, I promise.

There's also no need to get too comfortable.

There's also no need for me to keep saying "there's no need"... or is there?

〜ことはない: There's (probably) no need to panic!

構成こうせい

• 

  Casual (dictionary form) verbことはない
  Example:
  → ビッグフットは実際じっさいに存在そんざいしないから、心配しんぱいすることはないよ。
  "Bigfoot doesn't actually exist, so there's no need to worry.”

We have another 「こと」 grammar point in store today, but don't worry, this one's cool and simple. So put away the wail of despair and bring out the wahoo. WAHOO!

〜ことはない simply attaches to a given verb, nominalizes it, and expresses either ① "there is no need to do X", or ② "X never happens". Context will usually make it quite obvious which meaning we're dealing with, so like I said, no need to panic!