While 本周 (běnzhōu) itself is a straightforward time word, its usage highlights the distinction between formal and informal registers in Chinese communication. In a culture that values clarity and propriety in professional and official contexts, using the correct term for the situation is important.
Comparison to Western Usage: In English, “this week” is used almost universally, from a CEO's email to a text message between friends. In Chinese, there's a clearer split. A company-wide email will almost always use 本周 to announce “this week's targets” (本周目标). However, when asking a friend “What are you up to this week?”, you would almost certainly use a more colloquial term like 这个星期 (zhège xīngqī). Using 本周 in a very casual context isn't wrong, but it can make you sound slightly formal or distant.
Scheduling and Modern Life: The widespread use of terms like 本周, 上周 (last week), and 下周 (next week) reflects the fast-paced, schedule-driven nature of modern urban China. Mastery of these terms is fundamental for making appointments, setting deadlines, and simply organizing one's life, both professionally and personally.