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Chinese grammar - The past continuous tense

The past continuous tense

The past continuous tense expresses an action that was ongoing in the past. This tense emphasizes that the action was ongoing and not necessarily completed.

This is like 'was doing' in English.

Chinese doesn't have a specific grammatical tense for this; instead, it's conveyed through context, especially by using time words that indicate the past

- Time words such as 昨天 (zuótiān) meaning 'yesterday' and 上个星期 (shàng ge xīngqī) meaning 'last week'

The pattern is: [subject] + [past time word] + [verb] + [object].

Note that actions completed in the past typically require the completed action marker (le) as we saw previously.

Examples:
我昨天在图书馆读书。
wǒ zuótiān zài túshūguǎn dúshū.
I was reading in the library yesterday.

读书 (dúshū) means 'to study'

他上个星期在公司工作。
tā shàng ge xīngqī zài gōngsī gōngzuò.
He was working at the company last week.
你前天为什么没来上课?
nǐ qiántiān wèishéme méi lái shàngkè?
Why weren't you coming to class the day before yesterday?
我们上个月在海滩游泳。
wǒmen shàng ge yuè zài hǎitān yóuyǒng.
We were swimming at the beach last month.
你以前在哪里工作?
nǐ yǐqián zài nǎlǐ gōngzuò?
Where were you working before?
我昨天在写信。
wǒ zuótiān zài xiě xìn.
I was writing a letter yesterday.
她上个月在学中文。
tā shànggeyuè zài xué zhōngwén.
She was studying Chinese last month.

上个月 (shàng ge yuè) means 'last month'

我们上星期在准备考试。
wǒmen shàng xīngqī zài zhǔnbèi kǎoshì.
We were preparing for the exam last week.

准备 (zhǔnbèi) means 'to prepare'

他昨天在开会。
tā zuótiān zài kāihuì.
He was in a meeting yesterday.
他们昨晚在看电影。
tāmen zuówǎn zài kàn diànyǐng.
They were watching a movie last night.

昨晚 (zuówǎn) means 'last night'

我早上在跑步。
wǒ zǎoshang zài pǎobù.
I was running this morning.

早上 (zǎoshang) means 'morning'

你上周在做什么?
nǐ shàng zhōu zài zuò shénme?
What were you doing last week?
孩子们昨天在公园里玩耍。
háizimen zuótiān zài gōngyuán lǐ wánshuǎ.
The children were playing in the park yesterday.

玩耍 (wánshuǎ) means 'to play'

她昨天晚上在做饭。
tā zuótiān wǎnshang zài zuò fàn.
She was cooking dinner last night.
我们昨天在讨论这个问题。
wǒmen zuótiān zài tǎolùn zhè ge wèntí.
We were discussing this issue yesterday.