【正确答案】角色扮演在英语教学中的作用如下。 ①角色扮演具有较强的趣味性，能够活跃课堂气氛，使学生充分发挥自己的想象力，激发学生的表现欲，提高学生学习英语的兴趣。 ②角色扮演给学生提供了深入了解课文内容、运用已学知识的机会，有助于学生深入理解和灵活运用所学知识，使学生的综合语言运用能力得以发展。 ③角色扮演集交际、表演、合作于一身，对于学生综合素质的提升具有积极作用。

【正确答案】教学目标 Knowledge aim: Students can master the sentence pattern 'May I have...?'. Ability aim: Students can use the sentence pattern 'May I have...?' to ask for what they want in the supermarket. Emotional aim: Students become more willing to express wishes in English in their daily life.

【正确答案】导入和新授环节 Lead-in: Play a short video shot in a supermarket and have a free talk with students about what they can buy there. 【设计意图】 播放视频创设情境并就与课文话题相关的问题展开自由交谈，能够丰富课堂教学形式，营造轻松愉悦的教学氛围。 Presentation: ①Ask students to read the text and choose True or False for the following sentences. a. There are toys in the supermarket. ______ b. They buy a balloon. ______ c. They buy some apples. ______ ②Ask students to answer the question: The boy wants to buy something, and what does he say to his mum? Then present the sentence pattern 'May I have...?'. T: You want to have something, and you can say 'May I have...?'. For example, you want to have some oranges, you can say 'May I have some oranges?'. You want to have an ice-cream, and what can you say? Ss: May I have an ice-cream? T: Great! 【设计意图】 阅读文章后判断对错可以帮助学生快速了解本课内容，在语境中熟悉新句型；通过问答教授新句型能够加深学生对新知的认识与理解。