教师学科教案[ 20 – 20 学年度第__学期]任教学科：_____________任教年级：_____________任教老师：_____________xx市实验学校The Adverbial Clause of Time樊秀秀Learning aims: (教学目标)（注：教学目标以“为什么学，学什么，如何学”的顺序呈现）Emotion and values:(情感态度价值观)（注：此处以高考中时间状语从句的考频为例让学生知道时间状语从句的重要性）名词性从句、状语从句以及定语从句这三大从句是高中最重要的语法点。
对于从句的考察贯穿高考英语试卷的始终，从第一个单项听力，到最后的写作。
三者重要性不分伯仲。
但正如大家知道的，“三大”之一的状语从句，种类繁多。
时间、地点、原因、结果、条件、让步、目的、比较、方式9种。
这9种之中，对于高考来说，重要性的区别是很大的。
考频为证，以2006-2010年5年全国高考18个省市的19套卷子的单项选择题为例，涉及到状语从句的题目共有93道，其中时间状语从句考到了24题。
由此可见, 时间状语从句为重中之重。
Knowledge and skills (知识与技能)1. 掌握并灵活应用when, while, as 的基本用法及区别；2. 学习并掌握when, while 的特殊用法；3. 掌握since, before 主从句的时态;4. 区分since, before 常用句型。
Process and method(过程与方法)1．Students’ presentation （学生展示）(通过学生展示学习when, while, as, since, before这些连词的用法)2．Discussion and the teacher’s explanation （讨论与教师讲解）(通过讨论和老师讲解学习难点before与since的句型)3．Individual work, group work （个人及小组活动）（通过个人与小组活动解决练习题）Important and difficult points(重点及难点)1．When与while的特殊用法。
2．Before与since的时态及常用句型。
Teaching aids(教学手段)Multimedia（多媒体）chalk and blackboard(黑板) slide (幻灯片)Question presentation (问题呈现)1.When while as的区别及when, while的特殊用法。
( Group 1, 3, 8, 10 )2.since的用法及重要句型。
( Group 2, 8, 11 )3.before的主从句时态及常用句型。
( Group 5, 9, 10, 11 )评价问题：（8，10，11组在问题的预习及总结上做的最好，点出8组合作意识很强，但重点不突出）Teaching procedures(教学过程)Step I Lead-in(导入)(呈现教学目标的形式导入)Step II Question presentation(问题呈现)Step III The problems(解决问题)1．时间状语从句的连接词（叫大家抢答，看大家是否足够熟悉）when whenever as while before after until (till) since as soon asevery time next time the first/…time the moment the minute instantly immediately directly (一…就…) No sooner…than Hardly…when2．Question 1（学生展示问题1）when while as的用法1) when可表示一个时间点，也可表示一个时间段。
如：When he came in, we were having supper.When we were having supper, the light suddenly went out.2) while则只表示一个时间段。
它所引导的时间状语从句中的时态常用进行时态。
如：When/While he was eating his breakfast, he heard the doorbell ring.3) as则强调主句和从句的动作在同一时间进行;也可表示“随着……”。
As we walked, we talked.As time went by, I began to get used to the school life.4）When的特殊用法，表示“正在这时，突然”时用于下列句型：1. was doing something…when某人正在做……突然……2. was about to do…when某人正要做……突然……3. had just done…when某人刚刚做了某事…突然5）while 的其他用法：while作为并列连词，意为“而，却”，表示对比。
Eg. Some people waste food while others haven’t enough.while也可用来引导让步状语，意为“尽管，虽然”；可表示尽管，相当于although/though。
Eg. While I admit that the problems are difficult, I don’t agree that they can’t be solved.小故事看区别(主要考察when, while, as的基本用法的区别)___________ I came to Xin Zhou No.1middle school, I was a top student. In the following days, I didn’t get used to the “Three Steps” method quickly. So others studied _______ I was lazy and didn’t want to make efforts to study hard. As a result, I didn’t do wel l in the exam. _________ I heard the result, I felt upset. ____ time went by, I realized that I must try my best _____________ others were studying hard.答案：when/as, while, when/as, as, when/while/as对比训练(主要考察when, while的特殊用法)1. We were about to leave____ it began to rain.2. She thought I was talking about her son, ____, in fact, I was talking about my son.3. ____it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.A. whenB. whileC. asD. during答案：A B B3. Question2 since（学生展示问题2）(主要学习since主从句时态及句型)1. Great changes have taken place in your hometown since you left.（通过例句看时态：主句现在完成时，从句一般过去时）2．Since句型：It is/ has been + 一段时间＋since 从句(did)Eg. It is seven years since I joined the Party.我入党7年了。
4. Question3 before(学生展示问题3)（主要学习before的主从句时态及before的常用句型）1．before 所引导的时间状语从句所表示的动作发生在主句动作之后, 主句谓语要用过去完成时, before 引导的从句用一般过去时。
Eg: She had studied/studied English for six years before she went to college.1）It will be＋段时间＋be fore…“还要过多才……”It will be two years before he leaves the country.2）It was +段时间+before 从句（动作已发生）Eg. It was three weeks before he came back.3）It will not be + long+ before…“不多久就会……”Eg. It won’t be long before she comes b ack4）It was not +long+ before…“不多久就……了”Eg. It wasn’t long before he left the country.练习: 对比训练易混淆句型(易错点）(此处学生讨论总结出做这类题的关键突破点在哪) When/ before/ since1. It was 5 am _____we arrived at the village.2. It is 3 years _____we last met.3. It was two weeks _____we met again.答案： when, since, before突破点：一看be动词的时态，二看时间段还是时间点。
错题汇集（以考代练/周报）(此处叫两个学生上黑板写出答案)1. I _______ (enjoy) the fantastic scenery around ____ something unpleasant caught my eyes.2. When he found there was still some time left before the train had arrived ( 改错).3. The city attracts people from all over the world and its ties (联系）with the world _____________ (increase) since Sydney Olympic Games.答案：1.was enjoying when 2.去掉had 3.have(been)increasedStep IV Summary (小结)(此处回归知识与技能叫学生做个小结)Step V Homework(作业)。