人教版必修三第四单元核心词汇和短语

Unit4 Astronomy :the science of the stars （1） 核心词汇 1. system n系统，体系，制度 the solar system 太阳系 the education system 教育体制 eg The bank is equipped with a new alarm system. 这家银行装有新的警报系统。 2. theory n学说，理论 theoretical adj 理论的 theoretically adv理论地 In theory 理论上，按理说 eg In theory ,it can be used for ten years 从理论上说它能用十年。 3. in time 及时，迟早 in time for sth/ to do sth 来得及/及时做某事 In no time 立刻，马上 When you are in trouble , I will come to help you in time . 当你处于困境时，我会及时来帮助你。 You will learn how to do it in time. 你迟早会学会如何做这事的。 I will be in time for the train / to catch the train. 我要及时赶上那趟火车。 Don’t worry . I will get there in no time . 别担心，我立刻就到那儿。 4. unlike prep 不像 like prep 像 vt 喜欢 likely adj 很可能的 1）It is unlike sb to do sth 做某事可不像某人平时那个样 eg It is very unlike Tom to be so late . 迟到这么久可不像汤姆平时的作风。 2） It is likely that 从句...很可能..eg Sb is likely to do sth 某人很可得做某事 eg It is likely that Tom will pass the exam. 汤姆很可能会通过这次考试。 Tom is likely to pass the exam. 汤姆很可能会通过这次考试。 5 . harm