unit 4 earthquakes1.shake vi. & vt.(1)my hands shook during the exam. vi. 摇动，摇撼，颤抖 (2)the earthquake shook the lights. vt.使摇动 (3)vt.使受震撼，使（信念等）动摇 be shaken by/with/at 辨析：
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辨析
例句
tremble
指人因感情激动、寒冷、惧怕等引起的身体颤动。the boy trembled with fear.
shake
作“颤抖”讲时与tremble同义。它还有“握手，摇头或捧腹大笑”的意思。the earthquake shook the lights.2.right away“立刻，马上”的表达方式：right away, without delay, right now, straight away, at once, in no time, immediately 3.well-- you don’t look very ____. are you ill? -- no, i’m just a bit tired. a. good b. well c. strong d. healthy (1)adj.健康的 (2)n.井，水井；油井；气井 (3)adv.熟练地，有效地，令人满意地；很，非常 very/rather/fairly/quite/pretty well 4.too…to…具有否定意义，常用not…enough to…和so…that…句型结构改写。 i am too old to understand the cartoon. =i am not young enough to understand the cartoon. =i am so old that i can’t understand the cartoon. (1)e.g. i’m only too delighted to be here. 当too前有副词far, much, but, only等词修饰时，此结构没有否定意义，而表示肯定，意为“非常，十分……”，too后的形容词多是表示某种心情的，如happy, pleased, willing, thankful, anxious, eager, delighted等。 (2)e.g. it’s never too late to learn. 当too前有否定词时，此结构表示肯定。 (3)too+ adj. +for sb./sth. 表示“太……，不适合……” 5.burstburst forth突然出现 burst into突然闯入 burst out冒出 burst upon突然展现 burst open突然开了 6.event事件，大事；项目，赛事 all the events/in any event无论如何 in the event结果，到头来 after the event事后 in the event that/of…倘若，万一 in that event/in that case如果那样的话 辨析：
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辨析
例句
accident
意外事故。car accident
incident
附带的小事件，事端；政变。july 7th incident
event
重大的事件。what were the chief events of last year?7.directly(1)adv.径直地；坦率地；直接地；立刻 e.g. the bus goes directly to hk. (2)conj.一……就……引导时间状语从句 directly he went out he was caught. 8.ruinin ruins 严重受损 fall into ruins成为废墟 ruin＞destroy＞damage 9.extreme(1)adj.极度的，严重的；极端的，偏激的；过分的 extreme weather conditions极端恶劣的天气状况 extreme sports极限运动 (2)n.[c]极端不同的感情（情况或行为方式）；完全相反的事物 [u]极端，极度，极限 extremes of cold, wind or rain严寒、狂风、骤雨 take sth. to extremes采取极端行为 10.injure受伤，伤害辨析：
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