**Here are some examples of using the word «prove» in English:**
1. I have all the evidence to prove that he is guilty.
2. She worked hard to prove her theory, and finally, her research proved to be successful.
3. The detective was able to prove that the suspect was at the crime scene.
4. He needed to prove his worth to the company, so he worked extra hours and completed all his tasks on time.
5. The teacher asked us to prove our understanding of the topic by writing an essay.
6. Scientists have been trying to prove the existence of dark matter for decades.
7. She wanted to prove to her parents that she could be responsible, so they let her get a part-time job.
8. The lawyer presented all the evidence to the judge to prove his client's innocence.
9. The athlete needed to prove that she was the best in her sport, so she trained harder than ever before.
10. The company's financial reports proved that it was a successful business.