One-syllable verbs are verbs that consist of one character.
They are doubled according to the AA pattern, which means you just have to repeat the verb twice.
When one-syllable verbs are doubled, the second verb is read in a neutral tone:
If the verb is read in the 3rd tone, the first syllable changes its tone to the 2nd tone when it is doubled:
讲 — 讲讲 洗 — 洗洗
How delicious, have a taste!
tài hǎo chī, nǐ chángchang ba
I need to go and have a talk with her about this case
wǒ yào qù hé tā tántan zhè jiàn shìr
一下 cannot be added after doubled verbs.
Verbs can also be doubled by adding a word 一 between them. The tones in this case change in the same way as described above.
Can be tried
kěyǐ shì yī shì
What song is this, let me listen
zhè shì shénme yīnyuè, ràng wǒ tīng yì tīng
In past tense the verb is doubled by means of the participle 了 .
I've worn this shirt, it's your turn
wǒ chuān le chuān zhè jiàn chènshān, lún dào nǐ le
He has tasted this coffee
tā cháng le cháng zhè bēi kāfēi
The particle 了 is not used after a doubled pattern AA.
尝尝了 can not be used.
Verb reduplication is common in colloquial speech. It is not used in official texts.
Reduplication of two-syllable verbs
Two-syllable verbs are verbs that consist of two characters.
The verb can be doubled by the pattern ABAB
The word has to be said two times.
When two-syllable verbs are doubled, the second characteris read in a neutral tone:
讨论 — 讨论讨论
Two-syllable verbs are not doubled with 一 and 了.
Let me introduce myself
ràng wǒ jièshao jièshao zìjǐ
Let's get acquainted
wǒmen rènshi rènshi ba
The word can be doubled by the pattern AAB
This is how verb-object combinations are doubled.
In other words, only the verb part is doubled.
Let's go for a walk
wǒmen sàn sànbù ba
It’s really nice to share dinner with friend and chat
hé péngyou chī chīfàn, liáo liáotiān shì tǐng fàngsōng de
In past tense the verb is doubled by means of the participle 了.
We had some good food and dancing
wǒmen chī le dùn dà cān, tiào le tiàowǔ
When verbs cannot be doubled
Verbs that denote state, presence and direction are not doubled.
有 在 是 像 喜欢 去
Verbs cannot be doubled in sentences where:
1) the events continue into present moment or happen regularly;
2) several actions are happening at the same time;
3) the suffixes 过 and 着 are used;
4) the verb has a complement;
5) the verb is in the negative form.