美一、教学目标1.知识与技能：学习并掌握 while和when的用法。2.过程与法：通过练习，掌握while和when的用法并能够灵活运用过去进行时。3.情感态度和价值观：学会讲述过去发生的事情。 二、教学内容1.学习while和when的用法。2.用一般过去时和过去进行时讲述过去的事情。三、难点1.To know how to use“ when”and“ while”.2. To learn past continue tense.四、教学思路本课的教学内容是人教版八年级英语下册第五单元的第三, Section A的Grammar Focus--4c部分主要是通过练习进一步熟练运用连词when和 while以及过去进行时。对这部分的学习，应让学生先独立完成,再核对答案,纠正他们的错误,以加深记忆和理解。五、教学准备multimedia, blackboard, tape-recorder六、教学过程Step 1 Greeting and reviewT: Good morning, class!Ss: Good morning, Mrs Zheng!T：What were you doing when I came in?Ss:........Step 2 Grammar FocusGo over the sentences in the Grammar Focus and try to find out how to use“when, while”.First let students say out their opinions completely, and then the teacher sums up the rules.(一)when和 while都有“当……时候”的意思。when既可示某一时间点,也可以表示某一时间。在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的，可与主句中的谓语动词同时发生,也可在其后发生。例如:1. I was just reading a book when she came into my room.她走进我房间时,我正在看书。2. Were you writing when the teacher came in? 老师进来的时候,你在写信吗?3. When he was a child ,he |
