u4 earthquakes
1. 重点词汇。
burstburst in 打断，破门而入。
例句 he burst in upon our conversation. 他打断了我们的话。
when did you burst in你何时闯进来的？
burst into + n. 突然爆发
burst out + doing sth. 突然开始做某事。
放声大哭 burst into tears；burst out crying
放声大笑 burst into laughters；burst out laughing
ruinruins 名词，废墟（一定要加s）
lie in ruins 倒在废墟中。
ruin 指彻底毁掉，不含有以某种摧毁性的力量进行破坏，而含有在一定的过程中逐渐毁掉的意思，一般可以恢复。
例句 the flood ruined our village. 洪水冲垮了我们的村庄。
destroy 强调以具有摧毁或杀伤性的力量把某物彻底毁掉，一般不可恢复。
例句 destroy the enemy. 歼灭敌人。
damage 事物的价值或功能部分受损，有词组do damage to
例句 the ship was damaged in the bottom. 那条船的底部被损坏。
hurt 用于有生命的人（感情）或动物。 hurt one’s feeling
例句 children are easy to get hurt when they play. 孩子们在玩耍时易受伤。
my feelings were hurt when he didn't invite me to the party. 他不请我去参加派对令我很伤心。
rescue
come to one’s rescue
例句 the car was buried by the landslide（山崩）, the rescue team came to its rescue.这辆车因山崩被埋在地下，救援队前来救援。
recover
1. 重新获得；重新找到。
例句 jane recovered her lost wallet. 简寻回了丢失的钱包。
2. 恢复；使恢复原状。
例句 she has recovered her health. 她已恢复了健康。
3. 挽回，弥补。
例句 it's hard to recover lost time. 弥补失去的时间并不容易。
recover from
例句 it took a long time for him to recover from a bad cold. 他患重感冒，很长时间才**。
2. 语言点。
tens of thousands of 成千上万。
all hope was not lost. 所有的希望都没落空。
all…not (代词+not) 表示全部否定。意思为“全部…都不”
例句 all students didn't go to the playground. 所有的学生都没有去操场。
not all… 意思为“不全是。不全都… ”
例句 not all students went to the playground. 学生没有全去操场。
think highly of = think well of 高度评价，赞赏，重视
例句 you want them to think highly/ well of you. 你希望他们对你有好的评价。
被动be highly / well thought of
例句 he wanted to be highly/ well thought of. 他希望得到人们好的评价。
think little of= ignore不重视，不加思索。
例句 don't think little of yourself! 不要小看你自己！
think much of 重视，尊重。
例句 i don't think much of him. 我不重视他。
the+形容词意思为“……的人”
the trapped 被困住的人。
the buried 被埋的人若以“…的人”为主语，谓语动词用复数。
the dead 死了的人。
the living 活着的人。
be of +名词=同词根的形容词。
of great importance=important
例句 this question is of great importance. =this question is important. 这个问题很重要。
of great value= valuable
例句 good books are of great value to students. =good books are valuable to students. 好书对学生非常有用。
of great use=useful
例句 it is of great use. =it is useful. 这非常有用。
3. 句型。
in the farmyards, the chickens and even the pigs were too nervous to eat.
too…to 太…而不能…
he is too young to go to school. 他年纪太小而不能上学。
4. 语法。
虚拟语气。it seemed as if the world was at an end.
as if= as though 仿佛。
as if 从句用陈述语气。
条件：所表达的句子是真实的或极有可能发生或存在的事实。
比方说你现在屋里看不到外面的情况，却听到了雨滴声：
例句 it sounds as if it is raining． 听起来像是在下雨。（很可能存在）
as if 从句用虚拟语气。
条件：说话人认为句子所述的是不真实的或极少有可能发生或存在的情况。
从句虚拟语气动词时态的形式如下：
1）如果从句表示与现在事实相反，谓语动词用一般过去时。
2）从句表示与过去事实相反，谓语动词用“had＋过去分词”。
3）从句表示与将来事实相反，谓语动词用“would／could／might＋动词原形。
例句 he looks as if he was hit by lighting.（现在） 他看起来像被雷击似的。
例句 he looks as if he had been hit by lighting(过去)他看起来像曾被雷击过似的。
例句 he looks as if he would be hit by lighting.（将来）他看起来像要被雷击似的。
定语从句。the number of people who were killed or injured reached more than 400,000.
it was felt in beijing, which is more than two hundred kilometers away.
workers built shelters for survivors whose homes had been destroyed.
5. 其他。
dig-dug-dug
lie lay lain 躺。
lie lied lied 说谎。
lay laid laid 产卵；放置。
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