間 (かん) is used to say how long an action continues. It means “for” or “during” a period of time. You put 間 after a time amount to show duration. Key points: • Time + 間 = duration: 2時間, 3日間 • Use it with actions that last: 勉強します, 休みます, 仕事します • It answers “how long?” not “when?” • For minutes and hours, 間 is common and clear Example: “二時間勉強します” means “I study for two hours.” “三日間日本にいます” means “I will be in Japan for three days.” Be careful: に marks a point in time, while 間 shows duration. “七時に起きます” (at 7) is different from “七時間勉強します” (study for 7 hours). You can also use 間 with days or weeks to show a period: 一週間, 二週間, 三日間. It is a simple way to talk about how long you do something. Practice by making sentences about your day: 勉強, 仕事, 休み, 旅行, and add a duration with 間.