例句
Take a warm coat if you think it's necessary.
如果你觉得有必要，就带上一件暖和的外套。
Investment in public transport is necessary to reduce traffic congestion and improve urban air quality.
投资公共交通对于缓解交通拥堵和改善城市空气质量是必要的。
常用搭配
- if necessary｜如有必要
- necessary precautions｜必要的预防措施
- necessary for｜对……必需
- absolutely necessary｜绝对必要的
词形与相关词
necessity (n.) · necessarily (adv.) · unnecessary (adj.) · necessitate (v.)
用法提示
常用it is necessary to do；necessarily意为“必然地”。