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星期
xīngqī
week
今天是星期几？
今日は何曜日ですか？
正式的
A period of seven days, starting from Sunday or Monday depending on context; week
这个星期五我会去东京。
今週の金曜日に東京に行きます。
上个星期我学了很多新单词。
先週、多くの新しい単語を学びました。
星期 is used in both mainland China and Taiwan, but in Taiwan, 禮拜 (lǐbài) is also common. In formal contexts, 周 (zhōu) can be used interchangeably with 星期.
プロのヒント
Distinguish 星期 and 周
星期 is more common in everyday speech, while 周 is often used in formal writing or schedules (e.g., 周报 'weekly report'). Both mean 'week,' but 周 can also mean 'circumference' or 'circle.'
ゴールデンルール
Days of the week
星期 + number (一 to 六) or 天/日 is used to name days. Sunday can be 星期天 or 星期日; 星期天 is more common in mainland China, while 星期日 is preferred in Taiwan.
語源
星期 combines 星 (xīng, 'star') and 期 (qī, 'period'). Historically, it referred to the seven celestial bodies (Sun, Moon, and five visible planets) that were believed to influence the days of the week.
使用上の注意
In Chinese, 星期 is followed by a number (一 to 六) or 天/日 to indicate the days of the week (e.g., 星期一 = Monday, 星期天/星期日 = Sunday). In Japanese, the days are named using the on'yomi of the numbers (月曜日, 火曜日, etc.), but 星期 is still understood in contexts like 'this week' (今週).
単語の分解
星
star
root期
period
root汉日词典