necessary

中英词典：necessary

1. 形容词

1) 必要的；必需的

中文例句：

2) 不可避免的；必然的

中文例句：

2. 名词

1) 必需品；必需品

中文例句：

2) 必要；必要性

中文例句：

3. 词语辨析

必需的（necessary）强调某事对于达成目标或满足需要的重要性，而必要的（essential）则更侧重于某事对于成功或正常运转的不可或缺性。

4. 词汇扩充

无

5. 近义词

6. 反义词

7. 柯林斯词典

necessary

1. If it is necessary that something should be done, it is essential or needed.

2. If you say that someone or something is necessary for a particular purpose, you mean that they are needed for that purpose.

8. 牛津词典

necessary

1. Needed to be done, achieved, or present; essential.

2. (Of a course or condition) required by regulations or laws; compulsory.

9. 用法

1. necessary + for/to + noun / necessary + that-clause

2. make it necessary to + verb

10. 相关例句

1. It is necessary to study hard in order to pass the exam.

为了通过考试，必须努力学习。

2. Is it really necessary for me to attend the meeting?

我真的需要参加这个会议吗？

3. Eating a balanced diet is necessary for good health.

均衡的饮食对于健康是必要的。

4. The doctor said it was necessary for him to have an operation.

医生说他需要进行手术。

5. The necessary documents must be submitted before the deadline.

必须在截止日期前提交必要的文件。

6. It is necessary that we finish this project by next week.

我们必须在下周完成这个项目。

7. The heavy rain made it necessary to cancel the outdoor event.

大雨使得必须取消户外活动。

8. We will do whatever is necessary to solve this problem.

我们将尽一切必要的努力来解决这个问题。

9. The necessary supplies have been ordered and will arrive soon.

必要的物资已经订购，将很快到达。

10. It is necessary to wear a seatbelt while driving.

驾驶时必须系安全带。

11. The necessary preparations for the event are underway.

为活动做好必要的准备工作正在进行。

12. The car broke down on the way, making it necessary for them to call for help.

车在路上抛锚了，他们不得不求助。

13. She did not have the necessary skills to do the job.

她没有必要的技能来完成这项工作。

14. It is necessary to obtain permission before entering the restricted area.

在进入限制区域之前必须获得许可。

15. The necessary changes have been made according to the feedback from customers.

根据客户的反馈意见，已经进行了必要的改变。

16. He has all the necessary qualifications for the job.

他具备这个工作所需的一切资格。

17. The necessary information can be found on our website.

可以在我们的网站上找到必要的信息。

18. It is necessary to book tickets in advance for popular shows.

对于热门演出，提前预定票是必要的。

19. The necessary repairs will be carried out as soon as possible.

必要的维修将尽快进行。

20. It is necessary to take precautions to prevent accidents.

必须采取预防措施以防止事故发生。