1. 地震开始时我正在图书馆里；2. 地面开始猛烈地摇晃；我试图往外跑，但玻璃碎片和砖头砸了下来，墙开始坍塌；3. 最后，响声和摇动都停了下来；4. 我意识到自己的一条腿被卡住了；我担心没人会发现我；所以尖声呼救；好在一条狗发现了我，有人把我拉了出去。I was in the library when the earthquake started. The earth started to shake hard. I tried to run outside, but pieces of glass and bricks fell down, and the walls began to come down. Finally, the noise and shaking ended. I realized my leg was trapped. I was afraid that no one would find me. I screamed for help. Luckily, a dog found me and someone pulled me out. 1. 上周三，暴风雪袭击了北京；放学后，贝蒂和她的朋友艾米合撑一把伞，走向公交车站；2. 天气真是坏极了；突然，一阵大风从身后刮来，她们在大风中弄丢了伞，她们俩几乎跌倒，只能在暴风雪中慢慢地走向公交车站；3. 最后，她们上了一辆公交车回家了。A snowstorm hit Beijing last Wednesday. After school, Betty shared an umbrella with her friend, Amy, and they walked to the bus stop. The weather was really terrible. Suddenly, a strong wind came from behind. They lost their umbrella in the wind and nearly fell over. They had to walk slowly through the storm to the bus stop. At last, they got on a bus and went home.成千上万的冲走四面八方找到出路首先搬走出故障，坏掉遵守交通规则大雪听到风在吹thousands of wash away in all directionsfind one’s way outat firstmove awaybreak downfollow traffic rulesthe heavy snowhear the wind blowing过去进行时我们可以用过去进行时表示过去某一时刻正在进行时的动作或过去某一阶段一直在进行的动作。过去进行时的肯定结构是由“ was/were+ 现在分词”构成，否定结构是由“ was/were + not 现在分词”有些动词通常不用于进行，主要有：1 ，表示心理状态、情感动词，如 love, hate, like, know等。2 ，部分连系动词，如 seem, appear 等。3 ，感官动词，如 see, hear, feel, smell, sound, taste 等4 ，短暂性动词，如 decide, stop 等。when /while 和 as书面表达 P117
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