importance /imˈpɔ:təns/ n.［u］重要，显要: The matter is of no importance. 这件事无关紧要。［考句］It is of the utmost importance that you be here on time. 你要按时到这儿，这一点致关重要。（受importance影响，主语从句中用should + 动词原形，should可以省略，cf. important条）
important /imˈpɔ:tənt/ adj. 重要的， 有势力的，有地位的：The battle was the most important one in the war. 这场战斗是整个战争中最重要的。A prime minister is a very important man. 首相是一个很显要的人物。Irrigation is important for/to farming.灌溉对农业是非常重要的。Spending time with my children is important for/to me.花时间陪伴孩子对我来说很重要。［考句］It is important that the hotel receptionist make sure that guests are registered correctly.旅店接待人员应确保将旅客入住情况登记清楚，这个工作是很重要的。（在It is/was important (necessary, essencial, impossible, possible, advisable, desirable等) 后的that分句中，须用 (should) +动词原形。
