1. Competent in/at：表示在某方面有能力和技能。

– He is competent in handling complex situations.

– She is competent at playing the piano.

2. Competent to do something：表示有资格或能力去做某事。

– I am competent to perform the surgery.

– The candidate is competent to take on the role.

3. Competent authority：表示有权力或资格做出决定或采取行动的权威机构或个人。

– The competent authority has approved the project.

– The competent authority must make the final decision.

4. Competent person：指有能力执行某项任务或职责的人。

– He is a competent person for the job.

– The competent person was assigned to oversee the project.

5. Competent witness：指在法庭上提供证词时被认为是有能力、有资格的证人。

– The judge ruled that the witness was competent.

– The witness was deemed competent to testify.

6. Competent to practice：表示有资格从事某项专业工作。

– She is competent to practice law.

– The doctor is competent to practice medicine.

7. Competent and reliable：表示既有能力又值得信赖。

– She is competent and reliable, making her an excellent team leader.

– The company is known for its competent and reliable staff.

8. Competent to serve：表示有资格担任某个职位或角色。

– He is competent to serve as the head of the department.

– The board of directors deemed her competent to serve as the new CEO.

9. Competent and efficient：表示既有能力又高效。

– The new system is both competent and efficient.

– The team is competent and efficient, delivering results on time.

10. Competent to make decisions：表示有资格做出决策。

– The manager is competent to make decisions on his own.

– The board of directors is competent to make strategic decisions for the company.

– I am confident that she is competent in managing the team.

– The officer is competent to investigate the crime.

– The candidate is competent to serve as the mayor.

– The witness was found to be competent and provided valuable information.

– The lawyer is competent to practice law in all states.

– The team leader is both competent and reliable, ensuring the project’s success.

– The new software is competent and efficient, improving our workflow.

– The company has a competent and reliable team of engineers.

– The board is competent to make decisions that will benefit the company.

– The manager is competent to make decisions without consulting the higher-ups.

通过不断练习这些表达，你将能够更加自如地使用英语，并在各种场合中展现你的语言能力。