Following a verb, both 一下 ((yí xià, lit. “once”) and(一)点儿 ({yì} diǎnr “a bit”) can soften the tone in a question or an imperative sentence, therefore making it more polite. When used in this way, 一下(yí xià) modifies the verb, while(一)点儿 ({yì} diǎnr) modifies the object. For example: nǐ kàn yí xià ， zhè shì shuí de zhào piàn ？ 你看一下，这是谁的照片？ Take a look. Whose photo is this? nǐ xiǎnɡ chī diǎnr shén me ？ 你想吃点儿什么？ What would you like to eat? nǐ jìn lái yí xià 。 你进来一下。Come in for a minute. wǒ men hē yì diǎnr chá bɑ 。 我们喝一点儿茶吧。 Have a little tea. qǐnɡ nǐ kāi yí xià mén 。 请你开一下门。 Please open the door.