3 sentences

1. 他很聪明，不过有点懒。

   tā hěn cōng​ming, bù​guò yǒu​diǎn lǎn.

   He is very smart, but a bit lazy.

   Source: Dong Chinese Dictionary

2. 他很聪明，只不过有点懒。

   tā hěn cōng​ming, zhǐ​bu​guò yǒu​diǎn lǎn.

   He is very smart, only a bit lazy.

   Source: Dong Chinese Dictionary

3. 他很懒，从来不打扫房间。

   tā hěn lǎn, cóng​lái bù dǎ​sǎo fáng​jiān.

   He is very lazy and never cleans his room.

   Source: Dong Chinese Dictionary