Lesson five：task two开头段开头段&审题审题Morning21 开头段写法开头段写法 contents审题审题 大作文类型大作文类型观点讨论类观点讨论类 agree or disagree positive or negative advantage outweigh disadvantage Discuss bothgive your own opinion.问题解决类问题解决类 why happened?How to solve the problem?Task 2 Introduction(argumentation)Task 2 introductionintroductionThe best way to solve the worlds environmental problems is to increase the price of fuel.To what extent do you agree or disagree?背景：背景：The issue of the impact of global environmental problems has
