When 一 下 yíxià is preceded by a verb, it has the following two functions.
1. It is used as a time measure to imply that an action lasts for a short time :
我 用 一下 , 好 吗 ?
Could I use it for a little while?
2. Verb 一 下 … yíxià is used to soften the tone of voice, as leaving a verb at the end of a sentence sounds too definite, or even rather crude.
There are two other formulas that have the same function.
1. Reduplication of verbs, as in: 我给你 介绍介绍 … wǒ gěi nĭ jièshao jièshao… let me introduce you …
2. The verb 一 yi verb pattern, as in 请你 说一说 qĭng nĭ shuō yi shuō ( you) please speak.
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Translate the sentences into Chinese. (4, stative verb)
I am very busy.
You are very busy too.
His brothers are all very busy.
His younger brother is not busy.
They are not all busy.
I am very well. Are you well?
I'm very well too.
We are all very well.