crucial的用法

问题描述:

crucial的用法

crucial 是形容词,意思是关键; 严酷的;极为困难的;极紧要的;决定性的.例:Vitamins are crucial for maintaining good health.维生素是保持身体健康的关键.Teachers are crucial to the success of the school....约等于没说,我是说关于这个单词的句型补充:这是一个典型的虚拟语气。当句子中有crucial, important, necessary 等词做表语时,后面 that 引导的主语从句要用虚拟语气,形式是(should)+动词原型,should 可以省略掉。例:It is crucial that we maintain a healthy life style to live a long life.