Choosing 层, 封, 件, 条, and 位 in Chinese
层 / 封 / 件 / 条 / 位
These classifiers pair with different noun types: 层 counts floors or layers, 封 letters, 件 bounded matters or items, 条 long or itemized things, and 位 people respectfully. They occupy the ordinary classifier slot between a number or demonstrative and the noun. Their pairings are lexical, so one classifier cannot freely replace another.
Published July 27, 2026
Reviewed July 27, 2026
01 / PATTERN
See the Structure
MODEL
Number / Demonstrative + Classifier + Noun
Read the structure
These classifiers pair with different noun types: 层 counts floors or layers, 封 letters, 件 bounded matters or items, 条 long or itemized things, and 位 people respectfully. They occupy the ordinary classifier slot between a number or demonstrative and the noun. Their pairings are lexical, so one classifier cannot freely replace another. Keep the model Number / Demonstrative + Classifier + Noun visible while you compare each sentence.
她住在第二层。
She lives on the second floor.
Choose the right context
Use 层 for floors or layers and 封 for letters. Use 件 for matters, clothes, or bounded items and 条 for long or itemized nouns. Use 位 before a person when respectful reference is intended.
我收到一封信。
I received a letter.
Respect the boundary
Do not replace a noun's conventional classifier with any item from this set. Do not put the classifier after the noun. Do not use 位 for inanimate objects.
我写了一条信。
(I wrote a letter.)
Repair the pattern
A letter takes the wrong classifier: Letters conventionally take 封, not 条. The respectful human classifier modifies an object: 位 counts people respectfully and cannot classify books.
我写了一封信。
Use the repaired structure without changing the intended meaning.
02 / MAP
Read the Sentence
Read from left to right and notice the job performed by each part. The labels describe this example; they are not a rule that every Chinese sentence must copy.
她住在第二层。
She lives on the second floor.
她
Number / Demonstrative
This part occupies the Number / Demonstrative position in the model pattern.
住在
Classifier
This part occupies the Classifier position in the model pattern.
第二
Noun
This part occupies the Noun position in the model pattern.
层
Number / Demonstrative
This part occupies the Number / Demonstrative position in the model pattern.
03 / EXAMPLES
Examples You Can Reuse
Keep the structure stable while changing the people, objects, times, or conditions. Pinyin is shown as reading support; use the Chinese sentence and translation to confirm the grammar relationship.
她住在第二层。
She lives on the second floor.
我收到一封信。
I received a letter.
门口有两位老师。
There are two teachers at the entrance.
04 / LIMITS
When to Use It — and When Not To
Use it when
- Use 层 for floors or layers and 封 for letters.
- Use 件 for matters, clothes, or bounded items and 条 for long or itemized nouns.
- Use 位 before a person when respectful reference is intended.
Do not use it when
- Do not replace a noun's conventional classifier with any item from this set.
- Do not put the classifier after the noun.
- Do not use 位 for inanimate objects.
05 / REPAIR
Compare Right and Wrong
Compare the smallest meaningful change. Each explanation identifies a placement, scope, form, or clause relationship instead of treating the whole sentence as one undifferentiated mistake.
我写了一条信。
我写了一封信。
A letter takes the wrong classifier
Letters conventionally take 封, not 条.
桌上有三位书。
桌上有三本书。
The respectful human classifier modifies an object
位 counts people respectfully and cannot classify books.
我写了一条信。
Use 一封信.
桌上有三位书。
位 classifies people, not books.
06 / PRACTICE
Practice the Grammar Point
Complete three short tasks in order: judge the pattern, repair a common error, and build the sentence. Feedback is fixed and reviewed, so these activities do not use a checker allowance.
1. Judge the sentence
2. Choose the correction
3. Build the sentence
Build a complete sentence with 层 / 封 / 件 / 条 / 位.
07 / APPLY
Apply It in Your Sentence
Write one original sentence with 层 / 封 / 件 / 条 / 位. Your draft moves to the checker through this browser session, selects this grammar point as the first review focus, and waits for you to submit.
08 / QUESTIONS
Choosing 层, 封, 件, 条, and 位 Questions
Can 件 count clothes?
Yes. 件 commonly counts individual garments as well as matters and some bounded items. The specific noun still determines whether 件 is the established pairing.
Is 位 always required for people?
No. 个 is neutral and broad; 位 adds respectful reference and must still suit the context. Titles, names, and other noun-phrase shapes may use different patterns.
09 / SOURCES
Sources and Review Notes
These references support different parts of the lesson. GF0025-2021 supports level placement only; professional grammar works support the explanation, limits, examples, and cross-checks. Their inclusion does not imply endorsement.
Chinese Proficiency Grading Standards for International Chinese Language Education (GF0025-2021)
Ministry of Education and State Language Commission · Ministry of Education of the PRC · 2021
Locator: Appendix A, Level 2 item 【二10】, 名量词：层、封、件、条、位, PDF p. 186
Lists the five Level 2 classifiers and supplies the pairings 两层楼、一封信、一件衣服、一条河、一位老师.
Official sourceLearning Chinese: A Foundation Course in Mandarin, Unit 2
Julian K. Wheatley · MIT OpenCourseWare · 2011
Locator: Unit 2, §2.4.1 Measure words, printed pp. 65–67; full PDF body opened
Explains the number-classifier-noun slot, lexical classifier selection, and 条 with long or sinuous nouns.
Official source10 / CONTINUE
Continue with a Connected Rule
Learn first
个Chinese Measure Words
Review the general number-classifier-noun slot before choosing among these five lexical pairings.
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Compare this Level 2 set with later specialized classifiers while preserving the same noun-phrase slot.
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借用量词Borrowed Noun and Event Classifiers
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