时而…时而… vs 一时…一时…: what is the difference?
Both describe alternation. 时而 is neutral and suits scenes and weather, while 一时 sounds a little more literary and is mostly used for moods and quick changes of mind.
| Word | Pinyin | What it does | Structure |
|---|---|---|---|
| 时而…时而… | shí ér…shí ér | Says a state or action alternates between two conditions from time to time. | 时而 + A，时而 + B |
| 一时…一时… | yì shí…yì shí | Close to 时而…时而…, often used for quick changes of mood or condition. | 一时 + A，一时 + B |
时而…时而… (shí ér…shí ér)
Says a state or action alternates between two conditions from time to time.
Structure: 时而 + A，时而 + B
| Chinese | Pinyin | English |
|---|---|---|
| 海面时而平静，时而波涛汹涌。 | Hǎi miàn shí ér píng jìng, shí ér bō tāo xiōng yǒng. | The sea is calm at times and rough at others. |
| 他说话时而大声，时而小声，让人听不清。 | Tā shuō huà shí ér dà shēng, shí ér xiǎo shēng, ràng rén tīng bu qīng. | He speaks loudly at times and softly at others, so it is hard to hear him. |
| 小鸟时而飞到树上，时而落在地上。 | Xiǎo niǎo shí ér fēi dào shù shang, shí ér luò zài dì shang. | The bird flies up into the tree one moment and lands on the ground the next. |
Not: 他时而高兴。 时而 comes as a pair: 时而高兴，时而难过.
一时…一时… (yì shí…yì shí)
Close to 时而…时而…, often used for quick changes of mood or condition.
Structure: 一时 + A，一时 + B
| Chinese | Pinyin | English |
|---|---|---|
| 她的心情一时好，一时坏，谁也猜不透。 | Tā de xīn qíng yì shí hǎo, yì shí huài, shéi yě cāi bu tòu. | Her mood is good one minute and bad the next, nobody can guess it. |
| 病人的体温一时高，一时低，医生很担心。 | Bìng rén de tǐ wēn yì shí gāo, yì shí dī, yī shēng hěn dān xīn. | The patient's temperature goes up and down, and the doctor is worried. |
| 他一时想去，一时又不想去。 | Tā yì shí xiǎng qù, yì shí yòu bù xiǎng qù. | One moment he wants to go, the next he does not. |
Not: 他一时一时高兴。 Each 一时 needs its own predicate: 一时高兴，一时难过.
Where this comes from
The comparison is part of Coordinate and Sequential Compound Sentences (HSK 6) in the grammar reference, which has the full explanation, more worked examples, and what to learn before and after it.
More pairs: 朝着 vs 向 · 从而 vs 进而 · 非…不可 vs 必须 · 格外 vs 非常 · 或多或少 vs 多多少少 · 即使…也… vs 虽然…但是… · 鉴于 vs 出于 · 阵 vs 次 · all 81 pairs.
Frequently asked questions
What is the difference between 时而…时而… and 一时…一时…?
Both describe alternation. 时而 is neutral and suits scenes and weather, while 一时 sounds a little more literary and is mostly used for moods and quick changes of mind.
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