3 sentences

1. 他是我大伯的儿子，是我的堂兄。

   tā shì wǒ dà​bó de ér​zi, shì wǒ de táng​xiōng.

   He is my eldest uncle's son; he is my elder paternal cousin.

   Source: Dong Chinese Dictionary

2. 我父亲这一辈有大伯、叔和姑姑。

   wǒ fù​qīn zhè yī bèi yǒu dà​bó, shū hé gū​gu.

   My father's generation includes an elder uncle, a younger uncle, and an aunt.

   Source: Dong Chinese Dictionary

3. 春节期间，大伯和大妈都会回老家过年。

   Chūn​jié qī​jiān, dà​bó hé dà​mā dōu huì huí lǎo​jiā guò​nián.

   During the Spring Festival, my eldest uncle and his wife will return to their hometown for the New Year.

   Source: Dong Chinese Dictionary