文档介绍：Unit4 Words 1. in time in time : sooner or later; eventually 迟早;最后;终于 in time (for sth/to do sth): in time (for sth/to do sth): not late 及时;不迟 She will be back in time to prepare dinner. 她来得及回来准备晚饭。 I’ ll see him in time. 总有一天我会遇见他。 in/out of time : in/not in the correct time 合/不合节拍 The audience clapped in time to the music. 观众合着音乐的节拍拍手。 be harmful to 对…有害 do harm to sb. = do sb. harm 伤害某人,对某人有害处 1) Pollution is especially harmful to animals. 2) Smoking will do you a lot of harm. It does no harm (for sb.) to do … It does no harn for you to open the window. There is no harm in (sb. ’ s) doing sth. There is no harm in (your) opening the window. 2. ( 数目上)增加,增多;乘;(使)繁殖 1) Our problems have multiplied since last year. 2) 2 and 5 multiply to make 10. 4) The plants here multiply rapidly. 3) 6 multiplied by 5 is 30. = Multiply 6 by 5 to make 30. 4. prevent sb from (doing) sth=stop sb from doing sth" 阻止...做...”在主动语态中 from 可以省略,被动语态中不行。 How to prevent/stop this (from) happening. Its nationals may be prevented/stopped from leaving the country. keep sb from doing sth 中的 from 无论在主动语态中还是在被动语态中都不能省略。“阻止...做...”,如果省略 from, 意思为"让某人一直做某事" He kept me from getting hurt. He kept me doing homework. 5. puzzle n. 谜;难题 v. (使)迷惑;(使)为难 It's puzzles me. feel/ be puzzled about sth . 对某事感到迷惑 puzzle over/ about sth. 对某事苦苦思索?这个字母使我迷惑不解。 This letter puzzles me. ?她对她的未来感到迷惑。 She felt puzzled about her future. ?他昨晚冥思苦想一道数学题。 He puzzled over/ about a math problem last night. puzzling adj. 使迷惑的 puzzled adj. 迷惑的;困惑的 6. break out vt.& vi. (战争、打斗等不愉快事件)突然发生,爆发; 突然发生,爆发; 向外砸开;也可以表示突然大声叫喊等。 The war broke out in 1937. A fire break out last night. She broke out, “ That is too unfair! ” take place 表示“发生、举行、举办”,一般指非偶然性事件的“发生”,即这种事件的发生一定有某种原因或事先的安排。例如: The Olympic Games of 2008 took place in Beijing. happen 作“发生、碰巧”解,常指具体事件的发生, 特别指那些偶然的或未能预见的“发生”,一般用于偶然或突发性事件。例如: A storm happened across the river in another country. occur 作“发生、想到、突然想起”解,其意义相当于 happen 。例如: What ha