必修3

1.violent adj. 猛烈的，激烈的，强暴的 violence n.猛烈，激烈，强力 He has a violent temper. 他脾气暴躁。
2. in time 及时 1) You’d better return it in time. 2) You’ll learn how to do it in time. 迟早，总有一天 3.-ment 名词后缀，加在v.之后 1) 行为 argument treatment 2) 结果arrangement statement settlement 3) 工具instrument

4. exist vi. 存在，活下来，生存 One can not ~ without air. 没有空气我们不能生存。 exist... as 作为...存在，以...形式存在 exist... in 存在于...中 exist... on 靠...生活/生存 5.remain 1)系动词，保持，仍然是，后接n./adj./Ved/Ving/介短 In fact,the work remained unfished. 事实上，工作仍然未完成。 2)实义动词，剩下，常与there连用，不用于被动 There remains one difficult task for us. 还剩下一项困难工作。 remain to be done 尚待...

Whether it will do us harm or good ~s to be seen. 它是否对我们有利还是有害尚待见证。 6.in one’s turn 轮到某人，接着 He cooked the meal in his turn this week. 这周轮到他做饭 by turns 轮流 We drove the car by turns. 我们轮流开车。 in turn 依次，反之 They gave their names in turn. 他们依次说出自己的名字 句型： take turns to do sth 轮流做某事 it is one’s turn to do 轮到某人做某事

7. prevent sb (from) doing sth 阻止，妨碍sb做sth =stop sb (from) doing sth /keep sb from doing sth 在被动语态中，from都不可省。 We should take measures to prevent the river from being polluted. 我们要采取措施阻止河水被污染。 8.depend on 依赖，信赖，取决于 1) The country ~s heavily on its tourist trade . 这国家依赖于它的旅游业。 2) You can ~ ~ Jane because she always keep her word. 你可以信赖Jane，因为她很信守承诺。 3) Our success ~ s on whether everyone works hard or not. 我们的成功取决于每个人是否努力。 depend on/upon sb to do sth 依赖sb做sth

9.force 1)力 The force of gravity pulls things towards the earth centre. 引力把东西吸往地球中央。 2)武力，暴力 The police took the thieves away by force. 警察用武力带走贼。 3)vt.强制，迫使 ~ sb to do 10. now that 既然，由于 now that相当于since,引导原因状语从句，that可省去。 另外不可和so连用。 Now (that) you have grown up, you must stop this childish behavior. 既然你已经长大，你必须停止这种幼稚的行为。 Now (that) you are in ST,why not taste our seafood? 既然你在汕头，为什么不尝下我们的海鲜?