What should he doThis brainstorming stage is helpful in providing ideas for actualspeaking．By discussing with peers they can get a lot of informationconcerning the new topic they are going to learn．Step3 Pre-taskIn this step I introduce the topic and give the students clearinstructions on what they will have to do．So first I willprepare some vivid and beautiful pictures to present them the new words．The studentsassociate the meaning of the vocabulary and the form of it，and theyalso practice the speaking and the listening．I’ll get thestudents to do a problem|solving activity to help the students to recall somelanguage that may be useful for the task．I will make asummary to give a detailed explanation about the Grammar point—sentencestructure “should/could”．I usually try to cultivate the learner’s unconsciouscompetence，give the students more examples．In this way，I think theywill get a further understanding of the Grammar．Step4 Task-cycleTask 1—Pair work．I’ll ask the students to work with their partners to learn to giveadvice to different problems using the key words and the grammatical points．Task 2—Listeningpractice I designed the (1)Pre-listening activities (2) While-listening activities (3) Post-listeningactivities．Task 3—Group work．I’ll get the students act out the conversation in small groups．Step5 Post-taskIn this step，I prepared two activities．First is—Let’s think．Michael，coming fromUSA．He wants to practice his Putonghua，But he is very shy．So can yougive some advice to him

举高，看看都拿对了吗从正方体的面上你能找到什么图形呢（正方形）板书：正方形你找到几个正方形呢（6个）谁能到前面来摸一摸你找到的正方形呢我们也一起摸摸，数一数有几个正方形好吗用刚才的方法，在你喜欢的物体的面上找一找，看看你还能找到什么图形朋友呢生汇报：我在圆柱体上找到圆，我在长方体上找到长方形……（举起圆形）知道这是谁的脚印吗（圆柱体）谁知道老师是怎么把脚印留到纸上的吗你有没有其他办法也让这些图形朋友在你的纸上留下脚印呢四人一小组，讨论一下，说说还有什么好办法呢生自由汇报说方法师多媒体展示方法第一种方法：印一印，第二种方法：画一画谁能说说用第二种方法要注意什么呢（按住不能移动）第三种方法剪一剪接下来请大家选择你喜欢的物体，用你喜欢的方法，让他在你的纸上留下漂亮的脚印吧

”(语气坚决果断，神态郑重严肃，既严要求，又充满关心、期望，希望吕蒙能胜大任语重心长，谆谆告诫)(2)“孤岂欲卿治经为博士邪但……耳”(前一句表反问语气，对吕蒙辞学有责备、恼怒之意，后一句则说得语重心长，言辞恳切，足见对吕蒙的关心、爱护)(3)“卿言多务，孰若孤孤常读书，自以为大有所益”(从自己的切身体会来谈，现身说法，神情激动，语气殷切)(4)“卿今者才略，非复吴下阿蒙”(既感到十分惊讶，又由衷为吕蒙的进步感到高兴，惊异、赞许之态呼之欲见)(5)“大兄何见事之晚乎”(表示感叹语气，并非对鲁肃不满，而是表现出吕蒙对自己才略长进后感到很自豪、自得)三、模仿表演，体验反思1、模仿表演请三位同学分角色扮演孙权、吕蒙与鲁肃，然后进行对话表演

这个问题能激发学生探究的欲望，学生自己看书学习是培养学生自主学习的重要途径，都应予以重视以上的情境和实例使学生体会生活中处处有数学，通过实例，使学生获取大量的感性材料，为正确建立相反意义的量奠定基础分析问题探究新知问题3：前面带有“一”号的新数我们应怎样命名它呢为什么要引人负数呢通常在日常生活中我们用正数和负数分别表示怎样的量呢这些问题都必须要求学生理解教师可以用多媒体出示这些问题，让学生带着这些问题看书自学，然后师生交流这阶段主要是让学生学会正数和负数的'表示强调：用正，负数表示实际问题中具有相反意义的量，而相反意义的量包含两个要素：一是它们的意义相反，如向东与向西，收人与支出；二是它们都是数量，而且是同类的量