九年上课件.ppt

Preview 1. What bad weather! 多糟糕的天气呀! weather 不可名 what 后跟不可名( news 新闻) 2.The wind is blowing strongly with lots of sand. wind风刮得猛用 strongly. rain雨下得大用hard/heavily .eg: It’s raining hard 3.while I was walking down the street just now. while 当…的时候(后用进行时);然而 walk down 沿着…走 just now 刚才 4. I’m sorry to hear that.很遗憾听到这个消息. 5. cut down砍倒 change into = turn into转变成 6. stop / prevent …(from) doing sth. 阻止…做某事 = keep…from doing sth 7. wash away 冲走blow away 吹走；刮走 8. A lot of water can be saved by forests.许多的水被森林贮存.(被动语态: be+动词的过去分词) 9.Cutting down trees is harmful to human beings. 动词ing作主语,谓语动词用单三. 10. Although …,we still need to work hard to protect the environment. although = though不能与but连用; to +动原 “表目的” * sandstorms 沙尘暴 People have cut down too many trees. How do the sandstorms come into being? many trees cut down trees forest gone Wash the earth away change into desert sandstorms come into being *