时而...时而... (shí'ér...shí'ér) in Chinese
时而…时而…
时而...时而... describes two or more actions, states, or directions that alternate from time to time. Each 时而 directly introduces one alternating member, and a shared subject normally appears before the first marker. The expression is more compact and somewhat more written than 有时...有时..., but it does not require perfectly regular intervals.
Published July 17, 2026
Reviewed July 17, 2026
01 / PATTERN
See the Structure
MODEL
Subject + 时而 + A, 时而 + B
Read the structure
时而...时而... describes two or more actions, states, or directions that alternate from time to time. Each 时而 directly introduces one alternating member, and a shared subject normally appears before the first marker. The expression is more compact and somewhat more written than 有时...有时..., but it does not require perfectly regular intervals. Keep the model Subject + 时而 + A, 时而 + B visible while you compare each sentence.
山里的天气时而晴朗，时而下雨。
The mountain weather is sunny at times and rainy at others.
Choose the right context
For alternating weather states: 山里的天气时而晴朗，时而下雨。 For repeated changes in action: 他时而低头记录，时而抬头提问。 For movement between directions or qualities: 灯光时而明亮，时而昏暗。
他时而低头记录，时而抬头提问。
He alternately looked down to take notes and looked up to ask questions.
Respect the boundary
For two simultaneous qualities; use 又...又... or both predicates without an alternating marker. Do not stack two 时而 markers before the first alternating member. Do not infer an exact schedule; 时而 describes intermittent alternation, not regular timing.
山里的天气时而时而晴朗，下雨。
(The mountain weather alternates between sun and rain.)
Repair the pattern
Both 时而 markers are stacked before the first state: Each 时而 must introduce one alternating state: the first marks 晴朗 and the second marks 下雨. The second 时而 is placed after its predicate: 时而 precedes the state it introduces, so the second member must be 时而 + 昏暗.
山里的天气时而晴朗，时而下雨。
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.
山里的天气时而晴朗，时而下雨。
The mountain weather is sunny at times and rainy at others.
山里
Subject
This part occupies the Subject position in the model pattern.
的
时而
This part occupies the 时而 position in the model pattern.
天气
A, 时而
This part occupies the A, 时而 position in the model pattern.
时而
B
This part occupies the B position in the model pattern.
晴朗
Subject
This part occupies the Subject position in the model pattern.
，
时而
This part occupies the 时而 position in the model pattern.
时而
A, 时而
This part occupies the A, 时而 position in the model pattern.
下雨
B
This part occupies the B 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.
山里的天气时而晴朗，时而下雨。
The mountain weather is sunny at times and rainy at others.
他时而低头记录，时而抬头提问。
He alternately looked down to take notes and looked up to ask questions.
灯光时而明亮，时而昏暗。
The light alternated between bright and dim.
04 / LIMITS
When to Use It — and When Not To
Use it when
- For alternating weather states: 山里的天气时而晴朗，时而下雨。
- For repeated changes in action: 他时而低头记录，时而抬头提问。
- For movement between directions or qualities: 灯光时而明亮，时而昏暗。
Do not use it when
- For two simultaneous qualities; use 又...又... or both predicates without an alternating marker.
- Do not stack two 时而 markers before the first alternating member.
- Do not infer an exact schedule; 时而 describes intermittent alternation, not regular timing.
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.
山里的天气时而时而晴朗，下雨。
山里的天气时而晴朗，时而下雨。
Both 时而 markers are stacked before the first state
Each 时而 must introduce one alternating state: the first marks 晴朗 and the second marks 下雨.
灯光时而明亮，昏暗时而。
灯光时而明亮，时而昏暗。
The second 时而 is placed after its predicate
时而 precedes the state it introduces, so the second member must be 时而 + 昏暗.
山里的天气时而时而晴朗，下雨。
Use one 时而 before each state: 时而晴朗，时而下雨。
灯光时而明亮，昏暗时而。
Put the second 时而 before 昏暗: 时而昏暗。
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 时而…时而….
07 / APPLY
Apply It in Your Sentence
Write one original sentence with 时而…时而…. 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
时而...时而... (shí'ér...shí'ér) Questions
What is the difference between 时而...时而... and 有时...有时...?
Both can describe intermittent alternatives. 时而 is more compact and often more written, while 有时 is common in everyday speech; neither requires exact regularity.
Can 时而...时而... describe more than two states?
Yes. Additional 时而 phrases can be added when several states alternate, provided each marker clearly introduces its own member.
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.
Modern Mandarin Chinese Grammar: A Practical Guide, 3rd ed.
Ross, Ma, Chen, He and Yeh · Routledge · 2024
Locator: Construction index and function chapters relevant to 时而…时而…
Supports the learner-facing account of where 时而…时而… appears and what communicative job it performs.
Official sourceChinese: A Comprehensive Grammar, 2nd ed.
Yip and Rimmington · Routledge · 2016
Locator: Relevant sentence and clause chapters for 时而…时而…
Cross-checks the Subject + 时而 + A, 时而 + B pattern, clause relationship, and limits represented by the reviewed examples.
Official sourceChinese 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 6 grammar inventory
Supports directory placement at HSK 6; it does not independently prove usage rules.
Official source10 / CONTINUE
Continue with a Connected Rule
Compare
首先…其次…首先...其次...: First and Second
Contrast ranking considerations with a paired nominal formula that separates two sides.
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X了又Y，Y了又XX了又Y，Y了又X for Repeated Reversal
Compare alternating states with mirrored back-and-forth event repetition.
Continue learning
动词＋一X是一XV + 一X是 一X
Continue to another official repeated-unit frame built around matching slots.
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X是X，Y是YX is X, Y is Y
Use the paired copular formula to separate identities rather than alternate them.
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