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7. It seemed as if the world was at an end. 世界好像到了末日。
从句表示(在某人)看来似乎;好像
① It seems/looks/appears as if/though看起来似乎
② Sb./Sth. looks as if/though(不用seem/appear)
③ There seems/appears(to be)(不用 look)
There appears to have been a mistake. =It appears that there has been a mistake.
④ It seems so. =So it 。
8. In fifteen terrible seconds a large city lay in ruins.
在可怕的15秒钟内，一座大城市就沦落为一片废墟之中。
9. Two-thirds of them died or injured during the earthquake.
三人之二的人在地震中死去或受伤。
10. The number of people who were killed or injured reached more than 400,。
10. Some of the rescue workers and doctors were trapped under the ruins.
有些医生和救援人员被困在废墟下面。
11. All hope was not 。该句为局部否认。All, both, everyone, everybody, everything 以及every+名词都表示全部确定;但当not 在它们之前或之后都表示局部否认。no one, none nobody, nothing, notany, 以及 no+名词都表示全部否认。如：
① Both of them havent read this 。
② All of the boys are clever, but none of them can work out this problem.
这些男孩都很机灵，但没有一个人能解出这道题。
③ All bamboo doesnt grow tall.=Not all bamboo grows tall. 并非全部的竹子都长的高。
12. Workers built shelters for survivors whose homes had been destroyed.
救援人员为那些家园被毁的生还者盖起了避难所。
13. under the weight of在重压下，迫于
14. in the open air 在户外，在野外，露天 in the air 在空中，悬而未决
15. take turns to do sth依次，轮番做某事 in turn 依次地，轮番地
It is your turn 。
No one is allowed to get his ticket out of turn. 任何人都不准不按次序买票。