certificate for sick leave

例句：

1. 1. I need a certificate for sick leave to take the day off work.
   我需要一张病假证明才能请一天假。
2. 2. The company issued a certificate for sick leave to the employee who was ill.
   公司给生病的员工颁发了病假证明。
3. 3. The doctor gave me a certificate for sick leave, so I could rest and recover.
   医生给了我一张病假证明，所以我可以休息和恢复。