Explanation
Expresses a result; 'end up not', 'it will become that', 'it would mean that'.
Formation
Verb-negative (ない) + ことになる
Detailed explanation
The Verb ない ことになる grammar point is used to express a result or consequence. It translates to 'end up not', 'it will become that', or 'it would mean that' in English. It is formed by using the negative form (ない) of a verb followed by ことになる.
Examples
Kyou kare ga konai koto ni naru to, watashitachi no yotei wa kyanseru saremasu.
If he doesn't come today, our plans will be canceled.
Kono purojekuto ga susumanai koto ni naru to, shuueki ga heru deshou.
If this project doesn't progress, it would mean that revenue will decrease.
Kanojo wa shiken ni goukaku shinai koto ni naru to, sotsugyou ga okuremasu.
If she ends up not passing the exam, her graduation will be delayed.
Ame ga furu to, pikunikku ga okonawarenai koto ni naru deshou.
If it rains, it will become that the picnic doesn't take place.
Practice
Grammar content sourced from hanabira.org.