必修二 unit4知识点全总结.doc

Unit 4 Wildlife protection语言点 mercy 【原句回放】Farmers hunted us without mercy. 农民们毫不留情的猎杀我们 【点拨】1. mercy ( cn ./un.) 仁慈；宽容；怜悯 They showed mercy to their enemies. The ship was at the mercy of the storm. 2. Adj. merciful 仁慈的，宽容的。 She was merciful to the prisoners. 【拓展】 at the mercy of sb. /sth. 任……处置；对……无能为力；任由摆布 throw oneself on sb’s mercy 指望某人能宽容 without mercy 残忍地 show mercy to sb have mercy on sb 同情 可怜某人 affect 【原句回放】It contains a powerful drug which affects mosquitoes. 它含有一种影响蚊子的强效药物[来源:学_科_网] 【点拨】affect ?(Vt.) 影响；使感动。 The change in climate may affect your health. 【拓展】 Have/produce an effect on 对……有影响 come into effect 生效；实施 be of no effect 无效的；无用的 decrease 【原句回放】If their habitat is threatened or they cannot find enough food，their numbers may decrease．如果它们的栖息地受到威胁或它们不能找到足够的食物，它们的数量就会减少。 【点拨】decrease v. n. (1)vi. vt. 降低，减少，使(变小) [搭配] decrease in 在……方面减少from 在……基础上减少to 减少到……by 减少了…… [特别提示] decrease v. 减少 [近]reduce v. 减少 [反]increase v. 增加 All people desire an ________ in well-being (福利)． The workmen want to ___________ the working hours and to pay loss 【原句回放】loss of bamboo growing areas 竹子生长地的丧失 【点拨】loss n. (1)[U]损失；遗失；丧失 Did you report the loss of your jewellery to the police? (2)损失，损坏 The company suffered a heavy loss as a result of that mistake． (3)[C]输，未能赢 What made him unhappy was the loss of yesterday’s football match． 【拓展】 the loss of sth. 损失/丢失/输掉某物 suffer a loss (of) 蒙受损失 make up a loss 弥补损失 at a loss 不知所措，困惑 lose one’s way 迷路 lose oneself 迷路，迷失方向；沉湎于lose one’s balance失去平衡 lose a game/match by ( 以……之差)输掉比赛 be lost in 沉迷于 [联想](派生) lose v. 失去；丢失；损失；输 lost adj. 丢失的，失去的，输掉的 loser n. 失败者 reserve 【原句回放】We drove the car slowly and watched the lions in the nature reserve．我们慢慢驾车观察自然保护区里的狮子。 (1) [C]保护区，禁猎区 (2) [C]储藏，储备 I must keep a good reserve of energy for tomorrow’s match． I have little money in reserve． (3) v. 保留 You’d better reserve the money for future need． (4) v. (=book)预约，预订 We must reserve two seats in the cinema． 【拓展