Describe composition with 由……组成
由……组成
How it works
由……组成 identifies the parts or members that make up a whole. Start with the whole, then name its components after 由.
The pattern describes composition, not necessarily the person who created something. Keep it separate from expressions that identify an author or organizer.
The pattern
Example sentences
这个小组由五名学生组成。
This group consists of five students.
这套教材由三本书组成。
This set of teaching materials consists of three books.
Pinyin generally shows dictionary tones; tones can change in connected speech.
What to watch for
Do not reverse the parts and the whole. The subject is the group or set being described.
Try it
Describe a group with five students using 由……组成.
Show answer
这个小组由五名学生组成。 Zhè ge xiǎozǔ yóu wǔ míng xuésheng zǔchéng. This group consists of five students.
Syllabus reference
The topic is listed in the official 2025 syllabus. The explanation, examples and practice on this page are written for SenMandarin.
SenMandarin · Updated 2026-10-22