UNIT5 Section Ⅰ　Starting out & Understanding ideas 　 -【正禾一本通】2023-2024学年新教材高二英语选择性必修第二册同步课堂高效讲义教师用书（外研版2019）

　导学第一步——填一填·夯实基础知识 Ⅰ.重点单词 1．halfway 　　 adj.中间的，半途的 2．habitat n．栖息地 3．appetite n．胃口，食欲 4．multiply v．(使)大大增加，(使)倍增 5．chaos n．大混乱；紊乱 6．decrease v．(使)变小；(使)减少 7．trap n．夹子，陷阱 8．departure n．离开 9．substantial adj.大量的，多的 10．incident n．事件 11．owe v．应该做；对……负有……的义务 Ⅱ.派生单词 1．dramatically adv.显著地；戏剧性地→drama n．戏剧，戏剧艺术→dramatic adj.巨大的；戏剧的；引人注目的；给人印象深刻的 2．subsequently adv.后来，随后→subsequent adj.随后的；后来的→subsequence n．随后发生的事，后果 3．conservation n．保护→conserve v．保护 4．explode v．突然增加→explosion n．爆炸；猛增 5．intervention n．干预，介入→intervene vi.干预 6．ecology n．生态；生态学→ecological adj.生态的；生态学的 Ⅲ.核心短语 1．fail to do sth.　　　　 未能做某事 2．in harmony with 与……协调一致/和谐共处 3．take over 接管，接手 4．develop an appetite for 对……产生食欲 5．in turn 相应地，转而 6．out of control 失去控制，无法管理 7．remove from...to... 使……从……消失 8．decrease from...to... 从……减少到…… 9．in consequence 因此；结果 10．turn out 原来是，证明是，结果是 11．every last (某群体中的)每一个，全部 12．owe it to...to do (认为)应该为……做某事 Ⅳ.教材句式 1．景色中绿意盎然的草地和光秃秃的岩石形成鲜明的对比，给这座岛带来一种野性和自然之美。(现在分词短语作结果状语) The green grass and bare rock of its landscape contrast dramatically, giving it a wild and natural beauty． 2．他们也不难想象出岛上，包括皇家企鹅、王企鹅和象海豹在内的栖息动物是如何与其自然栖息地完美地和谐共存数千年的。(否定词置于句首的部分倒装) Nor would they fail to imagine how its native inhabitants，including royal penguins，king penguins，and elephant seals，existed in perfect harmony with their natural habitat for thousands of years. 3．怀着这个目标，人们在岛上投放了一种病毒。(with的复合结构) With this goal in mind, a virus was released onto the island. 4．但正如俗语所说：“山中无老虎，猴子称大王。”(while引导时间状语从句) But as the saying goes，“While the cat’s away, the mice will play.” 5．这一事件清楚地表明，大鼠、小鼠和兔子的泛滥问题需要彻底解决。(make＋it＋adj.＋that从句；need doing ) This incident made it clear that the rat, mouse and rabbit problem needed solving once and for all. 　导学第二步——读一读·理解课文内容 Fast­reading Skim the text and fill in the blanks. Careful­reading Choose the best answer according to the text. 1．What can we learn from the first paragraph? A．Macquarie Island is a