高中英语必修二Unit4知识点.docx

Unit 4 Wildlife protection
【短语归纳】：
out 灭亡；逐渐消失 peace和平地；和睦地； danger (of) 在危险中；垂危 relief 如释重负； into laughter 突然笑起来；大声笑了出来
protect...from 保护⋯⋯ 不受⋯⋯(危害)
pay attention to注意 into being 形成； to 按照；根据 ⋯⋯所说 that以致于；结果
【知识点总结】：
Their numbers maydecrease.
decrease vi. & vt. 减少；（使）变小或变少
decrease to
减⋯少至 ⋯ decrease by
减⋯少了 ⋯
. By 1881, the population of Ireland had decreased to million. Student numbers have decreased by 500.
拓展： reduce to/reduce by减少到 ⋯/减少了 ⋯
increase to /increase by增加到 ⋯/增加了 ⋯
As a result these endangered animals may evednie out.
die out 灭 绝 、 灭亡 . How did the dinosaur die out? die of 死于⋯（通常指疾病、衰老等内因） . Her grandfather died of cancer. die from 死于⋯（通常指交通事故等外因） . Many villagers from snake bites. die away （声音、风、光线等）渐息，渐弱 . The sound of the car died away
in the distance.
die down （慢慢）熄灭，平静下来 . The fire is dying down.
die off 相继死去 . The deer in the forest are all dying off from disease.
拓展： be dying for 很想要；渴望 be dying to do
. She is dying to see you.
Why are they in danger of disappearing?
in danger 在危险中，垂危 . We were warned that we were in danger. in danger of 有⋯⋯ 的危险 out of danger脱离危险
Farmers hunted us withoutmercy. mercy n．仁慈；宽恕；怜悯ask/beg for mercy 请求宽恕
show mercy to/have mercy on 怜悯/同情/可怜⋯⋯
with mercy 仁慈地 without mercy 残忍地；毫不留情地
at t