Explanation
Describes something that is decided, arranged, or expected.
Formation
Verb-dictionary form + ことになっている
Detailed explanation
The ～ことになっている grammar point is used to express that something has been decided or arranged, or is expected as a rule or custom. It can be translated as 'it is decided that...', 'it is arranged that...', or 'it is expected to...' in English. The formation is used with verbs in their dictionary form.
Examples
Kono kaisha de wa, 20-ji ni shigoto o oeru koto ni natte iru.
In this company, it is decided that work will end at 8 pm.
Nihon de wa, 18-sai ijou no hito ga senkyo ni touhyou suru koto ni natte iru.
In Japan, it is decided that people 18 years old and above will vote in elections.
Gakkou de wa, seifuku o kiru koto ni natte iru.
At school, it is decided that students will wear uniforms.
Tanaka-san ga konkai no purojekuto riidaa ni naru koto ni natte iru.
It is decided that Tanaka will be the project leader this time.
Practice
Grammar content sourced from hanabira.org.