on drugs

例句：

1. 1.She was caught on drugs and had to go to rehab.
   她被发现吸毒并不得不去戒毒所。
2. 2. The doctor warned him against using drugs.
   医生警告他不要滥用药物。
3. 3.He's been on drugs for years and has lost his job.
   他吸毒多年，已经丢了工作。