6 sentences

1. 这件衣服有没有大号的？

   zhè jiàn yī​fu yǒu méi​yǒu dà​hào de?

   Does this piece of clothing come in a large size?

   Source: Dong Chinese Dictionary

2. 我肚子不舒服，要去上个大号。

   wǒ dù​zi bù shū​fu, yào qù shàng gè dà​hào.

   My stomach feels upset; I need to go use the toilet for a number two.

   Source: Dong Chinese Dictionary

3. 这双鞋子穿起来有点儿紧，我想换个大号的。

   zhè shuāng xié​zi chuān qi​lai yǒu​diǎn​r jǐn, wǒ xiǎng huàn gè dà​hào de.

   These shoes feel a bit tight; I would like to exchange them for a larger size.

   Source: Dong Chinese Dictionary

4. 他在亲人的灵堂前放声大号，哭声十分凄惨。

   tā zài qīn​rén de líng​táng qián fàng​shēng dà​hào, kū​shēng shí​fēn qī​cǎn.

   He wailed loudly in front of his relative's mourning hall, and his crying was truly heartrending.

   Source: Dong Chinese Dictionary

5. 他在交响乐团里吹大号。

   tā zài jiāo​xiǎng yuè​tuán lǐ chuī dà​hào.

   He plays the tuba in the symphony orchestra.

   Source: Dong Chinese Dictionary

6. 请问您的大号是？

   qǐng​wèn nín de dà​hào shì?

   May I ask what your name is?

   Source: Dong Chinese Dictionary