Verb reduplication (1)
Verbs denoting an action that can be repeated or continued may be used in a reduplicated form.
Reduplicating a verb usually conveys:
that the action lasts a short while;
that it is done just a little;
or the sense of giving it a try.
The form gives the sentence a light, easy, softened tone and belongs mostly to spoken Chinese.
The forms
1. One-syllable verbs
A(一)A
verb + (一) + verb
For example:
想一想 — have a think
2. Two-syllable verbs
ABAB
For example:
休息休息 — take a bit of a rest
3. Separable verbs
AAB
For example:
帮帮忙 — lend a hand
Examples
那你再想一想,你想好了,我来买票。
Then have another think. Once you've decided, I'll buy the tickets.
想 + 一 + 想
think + one + think
那then
再again
想一想have a think
想好了have made up one's mind
我来买票I'll buy the tickets
Here 想一想 means a short think, not a long deliberation.
我有点儿累,现在想休息休息。
I'm a little tired; I'd like to take a bit of a rest now.
休息 + 休息
rest + rest
我有点儿累I'm a little tired
现在now
想want
休息休息take a bit of a rest
Here 休息休息 shows that the rest will be brief.
你能过来帮帮忙吗?
Could you come over and lend a hand?
帮 + 帮 + 忙
help + repeat + help
你能can you
过来come over
帮帮忙lend a hand
吗question particle
Here 帮忙 is a separable verb, so its reduplicated form is 帮帮忙.
Quick rule
Reduplicating a verb usually makes the action lighter, shorter or tentative.
One-syllable verb — A(一)A: 想一想 — have a think
Two-syllable verb — ABAB: 休息休息 — take a bit of a rest
Separable verb — AAB: 帮帮忙 — lend a hand