5 sentences

1. 他因为沉迷赌博而倾家荡产。

   tā yīn​wèi chén​mí dǔ​bó ér qīng​jiā​dàng​chǎn.

   He lost his entire fortune due to a gambling addiction.

   Source: Dong Chinese Dictionary

2. 他因为沉迷赌博输掉了所有家产。

   tā yīn​wèi chén​mí dǔ​bó shū​diào le suǒ​yǒu jiā​chǎn.

   He lost his entire family fortune due to a gambling addiction.

   Source: Dong Chinese Dictionary

3. 他沉迷于网络游戏，严重影响了学业。

   tā chén​mí yú Wǎng​luò yóu​xì, yán​zhòng yǐng​xiǎng le xué​yè.

   He is addicted to online games, which has seriously affected his studies.

   Source: Dong Chinese Dictionary

4. 她正在经历沉迷于诗歌的阶段。

   tā zhèng​zài jīng​lì chén​mí yú shī​gē de jiē​duàn.

   She's going through a poetry phase.

   Source: OpenSubtitles

5. 他最近沉迷于科幻小说，连走路的时候都在想书里的情节。

   tā zuì​jìn chén​mí yú kē​huàn xiǎo​shuō, lián zǒu​lù de shí​hou dōu zài xiǎng shū lǐ de qíng​jié.

   He has been obsessed with science fiction novels lately, thinking about the plots even while walking.

   Source: Dong Chinese Dictionary