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生在完成學(xué)習(xí)任務(wù)的過程中,接受多種詞匯學(xué)習(xí)策略的訓(xùn)練。 Career Col1Tier Rose Barry is a botadist an expert on plantsand environment.Career Corner is interviewing her. CC:I understan d that many trees are dying. RB:That’S right. There’S a huge amount ofpollution in the air. Pollution kills trees, plants,even animals. CC:Where does the pollution e from? RB:Well,some of it es from factories.Some of it es from cars and trucks CC:How does pollution spread? RB:The wind carries it.It spreads it far awayfrom the place where it began.W hen it rains,thepollution in the air es back down.We call thatacid rain. CC:W hy is acid rain a bad thing? RB: Acid rain is killing whole forests. It’Spoisoning the soil. It’S poisoning our lakes andrivers. CC:Is acid rain really a serious problem? RB:Absolutely.Some scientists believe that intwenty years all the great forests of the world may bedead. 文中的黑體部分是要求學(xué)生掌握的關(guān)鍵詞匯。鑒于這篇課文的重點是“pollution”,筆者在課堂引入時就提出以下問題: 1.What is the cause of death of some plants? 2.W hat types of pollution do you think we havenow? 3.What are the sources of pollution? 4.What are the consequences of pollution? 在學(xué)生思考問題、尋求答案時,教師給學(xué)生提出明確的學(xué)習(xí)任務(wù):“As a student,what do youknow about the po llution around US and what do youthink we can do to lessen the pollution?”學(xué)生在互相交流、互相探討、查詢資料、分析整理、提出方案時,他們就自然而然地運(yùn)用各種學(xué)習(xí)策略,高效地完成學(xué)習(xí)任務(wù)。他們在討論和呈現(xiàn)中涉及的詞匯、短語包括了課文中要求掌握的重點詞匯。 此外,為了達(dá)到更好的學(xué)習(xí)效果,教師在講授新課時,可引導(dǎo)學(xué)生在聽力、閱讀訓(xùn)練后,借助工具書對自己感興趣或覺得比較重要的語言點進(jìn)行更深、更廣的學(xué)習(xí)。這樣,既增大了學(xué)生學(xué)習(xí)的容量,使具體語言材料的學(xué)習(xí)落到實處,又有效地訓(xùn)練了學(xué)生的詞匯學(xué)習(xí)策略。在學(xué)習(xí)詞匯、短語搭配和相關(guān)表達(dá)法時,注意引導(dǎo)學(xué)生不要孤立記憶,而是在參考原文