HSK 4 · verb · noun · Practice
证明
to prove; testimony; proof; certificate
成绩证明了他的努力。
Chéngjì zhèngmíngle tā de nǔlì.
His grades prove his hard work.
我保证明天完成作业。
Wǒ bǎozhèng míngtiān wánchéng zuòyè.
I promise to finish the homework tomorrow.
办手续时，你需要出具身份证明。
Bàn shǒuxù shí， nǐ xūyào chūjù shēnfènzhèng míng。
When going through the procedures, you need to provide proof of identity.