八年级上册Unit2Howoftendoyourcise第五课时sectionB3a教案.doc

Unit 2 How often do you exercise? 一、内容: Period 5 Section B 3a-3c二、课时目标:1.重点词汇：dentist, magazine, however, than, almost, none, less, point2.句型：（1）However, she has some bad habits, too.（2）How often do you eat breakfast?Almost every day.3.完成本课时的写作任务。三、课型：写作课一、热身（Warm-up）教师检查课时作业,并让学生背诵2b短文。二、导入(Lead in)教师向学生提问引出本课时话题。以How often do you exercise/read books/watch TV的句型来了解学生做某件事的频率。三、呈现(Presentation)1.教师让学生完成3a任务,然后学生说出3a答案，并核对答案。2.教师让学生完成3b任务:点两名学生在黑板上已经画好的两个图表里补充自己的信息，并作点评。3.教师让学生完成3c和4任务。4.教师点几名学生汇报自己的考察结果，并且讲述健康的重要性。5.教师让学生完成Self Check的任务，并点评。四、解释(Explanation)1.However, she has some bad habits, too.然而，她也有一些坏习惯。(1)however在此表示转折，尤其用于谈及一个既成事实时，表示转折，其意为“可是、仍然、然而”。可放在句首、句中或句末，通常用逗号与句子其他成分隔开。如：My room is small, however, its comfortable.我的房间很小，但却很舒服。(2)habit意为“习惯，习性”，是可数名词。如：Reading is a good habit.读书是个好习惯。2.She always watches TV for more than two hours.她看电视总是超过两小时。(1)more than意为“超过，多于”，相当于over，与数词连用。如：There are more than 70 students in this class.这个班上有70多名学生。(2)“more than one+单数名词”意为“不止一个”，作主语时，谓语动词用第三人称单数形式。如：More than one boy knows how to play the computer game.不止一个男孩知道怎样玩这个电脑游戏。3.He watches TV almost every day.他几乎一整天都在看电视。almost意为“几乎，差不多”。用来修饰不定代词、形容词、副词、动词、介词短语等,可用于 any 以及 no, none, nobody, nothing, never 等He is almost two meters tall.他差不多有两米高。否定词之前；有时 almost 可表示十分相似(但又不完全相同)。如：【拓展】nearly 意为“几乎，差不多”，前可用 very, pretty, not 等词修饰，not nearly 意为“远非”, very nearly 意为“几乎”，都是习语。如：It was nearly ten oclock when he came home.他回家时快10点了。跟踪训练（ ）1.His mother is fifty years old. ,she looks very young.A. more than; ButB. less than; ButC. more than; HoweverD. less than; However【解析】由句意可知：他的妈妈50多岁，但是她看起来很年轻。more than意为“大于，多于”,however表转折关系。因此答案选C。五、作业(Homework)1.完成课时作业。2.以My healthy life为题，写一篇作文。六、教学反思(Teaching Reflection)本课时的学习中，主