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1、Unit 3一、重点词汇解读：1. flood2. bury3. occur4. pick up5. put down6. take off7. hit8. end up with sth. end up in end up doing sth.9. warn 10. set fire to set . on firebe on firecatch fireput out the fire11. manage to do sth. 12. incident/accident/event13. cover vt.14. in all all in all above all15. damage/
2、destroy二、重点句型解读：1. They can destroy houses, but leave the furniture inside exactly where it was.2. There are 800 tornadoes in the US each year, _ about 80 deaths and 1,500 injuries.(cause) Ash and lava poured down the mountain, _ hundreds of houses. (set fire to) The fires burned for three das, _ a
3、total of 25,000 buildings. The worst tornado of all time occurred in 1925, _ three US states. A. affected B. affecting C. having affected D. to affect He hurried to the classroom yesterday, only _ there was nobody there. A. found B. finding C. to find D. to have found总结：3. By the time it ended, more
4、 than 700 people _ (kill) and 2,700 _ (injure).4. Coghlan travelled back to Canada after he had been buried in Texas. =_ before _. I _ in Beijing for three years and now I live in Chengdu. A. had stayed B. stayed C. has stayed D. was staying I _ in Beijing for three years before I moved to Chengdu. A. had stayed B. stayed C. has stayed D. was stayingUnit 3, Book 3 1
