高中英语 Unit 6 Earth first导读 话题妙切入教案 外研版必修第二册-外研版高一必修第二册英语教案VIP免费

Unit6EarthfirstWherethereisgreen，thereislife.哪里有绿色，哪里就有生命。Wildlifeprotectionistoprotecthumanoneself!保护野生动物就是保护人类自己！Onlytoobeynatureinordertoovercomenature.只有服从自然才能征服自然。Natureiskindofalovingmother，butalsoabutcherincoldblood.大自然是慈爱的母亲，但也是冷血的屠夫。Anation'smoralisgreat，canfromtheanimal'sattitudetosee.一个国家的道德是否伟大，可以从其对动物的态度看出。Dreams—LangstonHughesHoldfasttodreamsForifdreamsdieLifeisabrokenwingedbirdThatcanneverfly.HoldfasttodreamsForwhendreamsgoLifeisabarrenfieldFrozenonlywithsnow.TheTibetanAntelopeTheTibetanantelopeissimilartotheMongoliangazelle(瞪羚)inappearance，butitismuchbigger.AgrownmaleTibetanantelopeusuallyweighs35～40kgandfemale24～28kg.TheparticularityoftheTibetanantelopeisthatthereisalittlebagineverynostril(鼻孔)．Itsroleistohelpbreatheonairthinhighland.Adultmales'hornsareusually50～60centimetersinlength，butfemaleshaven'tanyhorns.Antelopes'lifespanisnotverylong.Normally，theycanonlysurviveforeightyears.Theylikelivinginlargegroupsonplateauswiththealtitudesof4，300～5，100metersandaregoodatrunning.Butaccordingtotherecentresearchandreport，theTibetanantelopeisbecomingextinctbutluckilymanybravepeoplefullofresponsibilityhavetakenactiontojoinintheprotectionofit.Wealsohopetoseethegrandscene—alargenumberofantelopesrunningontheplateauagain.[探索发现]1．Whatistheroleofthelittlebagineverynostril?2．Howlongcanantelopesliveonaverage?3．WhatdoyouthinkweshoulddototheTibetanantelopes?[答案]1.Tohelpbreatheonairthinhighland.2．Eightyears.3．Weshouldtakeactiontoprotectthemfromextinction.