Alternating Phases with 一时…一时… in Chinese
一时……一时……
The paired frame 一时…一时… presents two states, actions, or trends alternating across successive periods. Each 一时 introduces one member, and the members usually contrast in a parallel form. It resembles 一会儿…一会儿… and 时而…时而…, but often suits broader fluctuations whose phases are not measured as short literal moments.
Published August 3, 2026
Reviewed August 3, 2026
01 / PATTERN
See the Structure
MODEL
Subject + 一时 + A + 一时 + B
Read the structure
The paired frame 一时…一时… presents two states, actions, or trends alternating across successive periods. Each 一时 introduces one member, and the members usually contrast in a parallel form. It resembles 一会儿…一会儿… and 时而…时而…, but often suits broader fluctuations whose phases are not measured as short literal moments. Keep the model Subject + 一时 + A + 一时 + B visible while you compare each sentence.
年纪大了，身体一时好一时坏。
With age, one's health is good at times and bad at others.
Choose the right context
Describe a condition that shifts back and forth over time. Contrast two recurring states or trends in parallel. Present unstable health, mood, output, or another fluctuating condition.
这家公司的产量一时上升一时下降。
This company's output rises at times and falls at others.
Respect the boundary
Do not use the frame for two simultaneous actions. Do not omit the second 一时 when marking both phases. Do not place the shared subject inside the two paired markers.
一时好身体一时坏。
(At times good health at times bad.)
Repair the pattern
The subject splits the paired frame: The shared subject 身体 precedes the complete paired frame; each 一时 directly introduces its state. The second phase lacks its marker: Alternation requires the second 一时 before the contrasting phase 下降.
身体一时好一时坏。
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.
年纪大了，身体一时好一时坏。
With age, one's health is good at times and bad at others.
年纪
Subject
This part occupies the Subject position in the model pattern.
大
一时
This part occupies the 一时 position in the model pattern.
了
A
This part occupies the A position in the model pattern.
，
一时
This part occupies the 一时 position in the model pattern.
身体
B
This part occupies the B position in the model pattern.
一时
Subject
This part occupies the Subject position in the model pattern.
好
一时
This part occupies the 一时 position in the model pattern.
一时
A
This part occupies the A position in the model pattern.
坏
一时
This part occupies the 一时 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.
年纪大了，身体一时好一时坏。
With age, one's health is good at times and bad at others.
这家公司的产量一时上升一时下降。
This company's output rises at times and falls at others.
他的情绪一时高兴一时悲伤。
His mood alternates between happiness and sadness.
04 / LIMITS
When to Use It — and When Not To
Use it when
- Describe a condition that shifts back and forth over time.
- Contrast two recurring states or trends in parallel.
- Present unstable health, mood, output, or another fluctuating condition.
Do not use it when
- Do not use the frame for two simultaneous actions.
- Do not omit the second 一时 when marking both phases.
- Do not place the shared subject inside the two paired markers.
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.
一时好身体一时坏。
身体一时好一时坏。
The subject splits the paired frame
The shared subject 身体 precedes the complete paired frame; each 一时 directly introduces its state.
产量一时上升下降。
产量一时上升一时下降。
The second phase lacks its marker
Alternation requires the second 一时 before the contrasting phase 下降.
一时好身体一时坏。
The shared subject 身体 precedes the complete paired frame; each 一时 directly introduces its state.
产量一时上升下降。
Alternation requires the second 一时 before the contrasting phase 下降.
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 一时……一时…….
07 / APPLY
Apply It in Your Sentence
Write one original sentence with 一时……一时……. 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
Alternating Phases with 一时…一时… Questions
How is 一时…一时… different from 一会儿…一会儿…?
Both mark alternation. 一会儿 often highlights successive short phases, while 一时 can describe broader recurring fluctuations.
Can verbs appear after 一时?
Yes. Each slot may contain an adjective, verb, or phrase as long as the paired members form a coherent alternation.
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 6 item 【六43】, PDF p. 239 (printed p. 233)
Places 一时…一时… at Level 6 with alternating health, output, and emotion examples.
Official sourceLaoshi Chinese Grammar Reference
Laoshi editorial team · Laoshi · 2026
Locator: Grammar article 179, The structures now…, then…, 一时…一时… section
Explains that the frame alternates periodically repeated actions or situations and permits adjectives, verbs, or phrases in its slots.
Official source10 / CONTINUE
Continue with a Connected Rule
Easy to confuse
一会儿……一会儿……一会儿…一会儿… for Alternating States and Actions
Both alternate phases, but 一会儿 more readily highlights short successive moments.
Easy to confuse
时而…时而…时而...时而... (shí'ér...shí'ér)
Both mark intermittent alternation, while 时而 is a compact written adverbial alternative.
Compare
忽A忽B忽A忽B: Abrupt Alternation
忽A忽B emphasizes abrupt shifts, whereas 一时…一时… neutrally divides recurring periods.
Compare
时A时B时A时B: Alternating from Time to Time
时A时B is a compact balanced frame, while repeated 一时 makes each temporal phase explicit.
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Easy to confuse
Both alternate phases, but 一会儿 more readily highlights short successive moments.