necessity的形容词、副词和动词

形容词：necessary (必要的，必需的) 副词：necessarily (必要地，必然地) 动词：necessitate (使成为必要)

1. It is necessary to study for the exam if you want to get a good grade. (形容词)

如果你想得到一个好成绩，那么复习考试是必要的。

2. He necessarily needs to come to the meeting tomorrow. (副词)

他必须明天来参加会议。

3. These changes necessitate a different approach to the problem. (动词)

这些变化要求对问题采取不同的方法。

4. Having a valid passport is necessary for traveling abroad. (形容词)

持有有效护照对于出国旅行是必要的。

5. She necessarily arrived late due to the heavy traffic. (副词)

由于交通拥堵，她必然会迟到。

6. The recent increase in crime rates necessitates stronger security measures. (动词)

最近犯罪率的上升使得需要更强大的安全措施。

7. Good communication is necessary in any relationship. (形容词)

在任何关系中，良好的沟通是必要的。

8. We necessarily have to make some sacrifices to achieve our goals. (副词)

为了实现我们的目标，我们必须做出一些牺牲。

9. The current situation necessitates a change in strategy. (动词)

目前的情况需要改变策略。

10. Clean water is a necessary resource for human survival. (形容词)

清洁的水是人类生存所必需的资源。

11. He necessarily had to leave early to catch his flight. (副词)

他不得不必然早些离开以赶上他的航班。

12. The limited funding necessitates careful budgeting. (动词)

有限的资金要求仔细的预算安排。

13. It is necessary to wear protective gear when riding a motorcycle. (形容词)

骑摩托车时必须穿戴保护装备。

14. As the deadline approaches, the project necessarily becomes more urgent. (副词)

随着截止日期的临近，项目必然变得更加紧急。

15. The complexity of the task necessitates thorough planning. (动词)

任务的复杂性要求进行彻底的规划。

16. A healthy diet is necessary for maintaining good physical and mental health. (形容词)

均衡的饮食对于保持身心健康是必要的。

17. Learning a foreign language necessarily involves practicing speaking skills. (副词)

学习一门外语必然涉及练习口语技能。

18. The sudden change in weather necessitated a change of clothing. (动词)

突然的天气变化使得需要更换衣物。

19. A good night's sleep is necessary for feeling refreshed and energized. (形容词)

一个良好的睡眠对于感觉清爽和充满活力是必要的。

20. The evidence necessarily leads to the conclusion that he is guilty. (副词)

证据必然导致结论，他有罪。

21. The growth of the business necessitates hiring additional employees. (动词)

业务的增长必须雇佣额外的员工。

22. Personal protective equipment is necessary for ensuring workplace safety. (形容词)

个人防护设备对于确保工作场所安全是必要的。

23. Some mistakes are necessarily made in the process of learning. (副词)

在学习过程中不可避免地会犯一些错误。

24. The accident necessitated a complete overhaul of the manufacturing system. (动词)

事故使得制造系统需要进行全面改革。

25. Regular exercise is necessary for maintaining a healthy weight. (形容词)

定期运动对于保持健康的体重是必要的。

26. He necessarily had to ask for directions as he was in an unfamiliar city. (副词)

由于他身处一个陌生的城市，他必然要求问路。 27. The complexity of the project necessitates collaboration between different departments. (动词)

项目的复杂性使得不同部门之间需要合作。

28. Oxygen is necessary for sustaining life. (形容词) 氧气对于维持生命是必不可少的。

29. His lack of experience necessarily led to mistakes in his work. (副词)

他缺乏经验必然导致他的工作中出现了错误。