In Japanese, the expressions “にある” (ni aru) and “になっている” (ni natte iru) are used to express the state of something.
“にある” is often used with words like 状態 (joutai, “state”), 状況 (joukyou, “state”) or 傾向 (keikou, “trend). Take this example sentence:
- The body is in a state of sleep.
Here you can think of this sentence as meaning the body is existing in the “睡眠” (suimin, “sleep”) state.
- The price is on a rising trend.
“になってる” is used in a similar way to express a state or condition of something. While it can literally be translated to “is becoming ~”, the “〜ている” form is also used to show an ongoing state, similar to English “it is freezing”.
- Updates have been disabled by the admin.
- This factory has halted production.
You can also use the past tense of these forms to show something was previously in a state, as in “にあった” or “になっていた”. Make sure you don’t confuse “になっていた with “になった”, the latter which refers to a transition rather than a state.
As you can probably tell from the tone of these sentences, these patterns have a certain formal ring to them and are most often seen in places like formal documents, news, or in a work environment. There is no need to force yourself to use them in conversational speech, but make sure you understand what they entail if you happen to come across them.
You can see two of my past posts below which talk about related expressions for describing state.