Word: 不必 (bùbì) need not; does not have to

不必考虑，去做就好。

Búbì kǎolǜ, qù zuò jiù hǎo.

Don't think about it, just do it.

他不必上学。

Tā búbì shàngxué.

He doesn't have to go to school.

你不必什么都非得自己来。

Nǐ búbì shénme dōu fēiděi zìjǐ lái.

You shouldn't try to do everything by yourself.

你不必去那里。

Nǐ búbì qù nàli.

You don't need to be there.

你不必回复那封信。

Nǐ búbì huífù nà fēng xìn.

You don't need to answer that letter.

你不必带你的伞。

Nǐ búbì dài nǐ de sǎn.

You didn't need to bring your umbrella.

你不必打电话给我。

Nǐ búbì dǎdiànhuà gěi wǒ.

You need not telephone me.

你不必担心这样的事情。

Nǐ búbì dānxīn zhèyàng de shìqing.

You don't need to worry about such a thing.

你不必着急。

Nǐ búbì zháojí.

You don't have to hurry.

你不必紧张。

Nǐ búbì jǐnzhāng.

You don't need to be nervous.

你不必马上出门。

Nǐ búbì mǎshàng chūmén.

You don't have to leave right now.

你不想去的话不必去。

Nǐ bùxiǎng qù dehuà búbì qù.

You don't need to go unless you want to.

你今天不必读书。

Nǐ jīntiān búbì dúshū.

You don't need to study today.

她不必自己做。

Tā búbì zìjǐ zuò.

She won't have to do that by herself.

她的事你再也不必担心。

Tā de shì nǐ zàiyě búbì dānxīn.

You don't have to worry about her anymore.

如果你不想的话你不必告诉我。

Rúguǒ nǐ bùxiǎng dehuà nǐ búbì gàosu wǒ.

You do not need to tell me if you do not want to.

如果您不愿意的话，就不必回答。

Rúguǒ nín bú yuànyì dehuà, jiù búbì huídá.

If you are not willing to speak, then you do not have to answer.

希望我们以后不必再这样做了。

Xīwàng wǒmen yǐhòu búbì zài zhèyàng zuòle.

Let's hope that we don't have to do that anymore.

您不必感谢我。

Nín búbì gǎnxiè wǒ.

Don't mention it.

您现在不必购买任何东西。

Nín xiànzài búbì gòumǎi rènhé dōngxi.

You don't have to buy anything right now.

我不必知道所有的细节。

Wǒ búbì zhīdào suǒyǒu de xìjié.

I don't have to know all the details.

我们不必参加那场会议。

Wǒmen búbì cānjiā nà chǎng huìyì.

We don't need to attend that meeting.

我希望我不必工作。

Wǒ xīwàng wǒ búbì gōngzuò.

I wish I didn't have to work.

我昨天不必读书。

Wǒ zuótiān búbì dúshū.

I didn't have to study yesterday.

有麝自然香，不必迎风扬

yǒu shè zìrán xiāng, búbì yíngfēng yáng

if you have musk it smells sweet by itself, no need to wave it in the wind