important,necessary,natural,essential,strange这些名词及形容词后为什么会表虚拟呢,不是应该表陈述我就是想知道为什么

important和necessary区别 friendship的形容词.necessary的反义词 important的名词 We all think it necessary and important that a citizen important 和 necessary 在句型上的区别 necessary 两种微粒构成的物质一定是混合物 very important是否等于necessary 能不能说very necessary necessary and important to all people中的necessary 和important 的词性这句话是省略了主语吗 it is be necessary for和 be necessary to的区别老师说be important to后面加人,如果还有下文用be important for sb doing sth那be necessary to 和be necessary是不是也是这种用法?还是说be necessary to do sth be necessary for doing st it's important/ necessary ...+that 后面该怎么加虚拟语气? It is necessary and important for students to take enough exercise it's necessary aand important for students to take enough exercise important 和 necessary 的用法是什么啊?关于 to 和 for的 分别用diffcult important necessary造句,结构itis adj for sb to do sth These words mentioned _____ are simple but important and necessary.belowdownupabove necessary和important哪个程度深?necessary和important这两个词翻译出来时必要和重要,我觉得必要比重要程度深,但我问了一个美国人necessary和important这两个词哪个程度深,她说是necessary.我想问一下neces It is necessary and important for students to take enough exercise翻译出来要是中国的名言啊! Everyone knows that trees are very＿＿＿ to people.A.necessary B.well C.need D.important It's ____ of you to help me solve the problem.A.important B.necessary C.impossible