Word: 信封 (xìnfēng)

他裁开了那个信封。

Tā cái kāile nàge xìnfēng.

He cut the envelope open.

信封上写着小丁爸爸的名字。

Xìnfēng shàng xiězhe Xiǎo Dīng bàba de míngzi.

Xiaoding's father's name is written down on the envelope.

我在信封上写错了地址。

Wǒ zài xìnfēng shàng xiě cuòle dìzhǐ.

I wrote the wrong address on the envelope.

我已经有信封了。

Wǒ yǐjīng yǒu xìnfēngle.

I already have an envelope.

我忘记在信封上贴邮票了。

Wǒ wàngjì zài xìnfēng shàng tiē yóupiào le.

I forgot to attach a stamp to the envelope.

我撕开了信封。

Wǒ sī kāile xìnfēng.

I ripped the envelope open.

把另一张邮票贴在信封上。

Bǎ lìng yì zhāng yóupiào tiē zài xìnfēng shàng.

Stick another stamp on the envelope.

把邮票贴在信封上。

Bǎ yóupiào tiē zài xìnfēng shàng.

Stick a stamp on the envelope.

秘书把信塞到一个信封里。

Mìshū bǎ xìn sāi dào yí gè xìnfēng lǐ.

The secretary stuffed the letter into an envelope.

秘书把信塞到了信封里。

Mìshū bǎ xìn sāi dàole xìnfēng lǐ.

The secretary stuffed the letter into an envelope.

请给我一个信封。

Qǐng gěi wǒ yí gè xìnfēng.

Please give me an envelope.

这张纸太大，塞不进信封里。

Zhè zhāng zhǐ tài dà, sāi bú jìn xìnfēng lǐ.

The paper is too big for the envelope.