What it means
〇〇くする changes an i-adjective into an expression meaning to make something become that way. The subject intentionally causes the object to have the stated quality, so this pattern is transitive. It describes a change or adjustment without specifying whether it is completed or happening in the future.
Usage note
〇〇くする is used with i-adjectives. Do not confuse it with 〇〇くなる, which means that something becomes a certain way without directly stating that someone causes the change.
How to use it
母が部屋を明るくします。
Mother makes the room brighter.
母が部屋を明るくする。
Mother makes the room brighter.
Example sentences
母は朝、カーテンを開けて、部屋を明るくしました。
In the morning, my mother opened the curtains and made the room bright.
引っ越しの前に、私は不要な本を捨てて、荷物を少なくしました。
Before moving, I threw away unnecessary books and reduced the amount of luggage.
夏はエアコンの温度