教案通常又叫课时计划，包括时间、方法、步骤、检查以及教材的组织等。它是教学成功的重要依据。鉴于教案的重要性，下文精心准备了这篇初二下册英语第三单元第一课教案，我们一起来阅读吧!

Teaching goals (教学目标)

1.Words : barber shop , well , bathroom , accident , earth , silence , playground , around , strange , kitchen , modern , follow , shirt .

2.when , while 引导的时间状语从句。

3.学习过去进行时态。

4.利用知识谈论过去发生的事情。

5.复习过去式，学会讲故事。

6.了解一些自然科学知识和社会科学知识。

Important and difficult points：(教学重难点)

1.when , while 引导的时间状语从句。 2.学习过去进行时态。

Teaching aids : a tape-recorder , cards .

第一课时

Teaching procedures(教学步骤) :

Step 1 Leading in(导入话题，激活背景知识)

1.Greetings and free-talk . 2.Check the Homework(家庭作业) .

3.Dictate the words in Unit 2 .

Step 2 Pre-task(任务前活动)SB Page 18 , 1a .

1.Point to the sentences .Read the sentences .Explain what each one means .

2.Look at the picture .Point out the six people .Match the statements with the people in the picture .

3.Check the answers .

4.Practice reading .

Step 3 While-task(任务中活动)SB Page 18 , 1b .

1.Read the instructions .Make sure the Ss understand what they should do .

2.Look at the dialogue in the picture .

语法：

过去进行时态的构成: was / were + doing .

用法:表示过去某一时刻或某一段时间正在进行的动作，一般用时间状语来表示。

I was standing in front of the library when the UFO arrived .

3.Play the tape twice . Circle the correct responses . 4.Check the answers .

Step 4 Post-task(任务后活动)

Talk about what people were doing when the UFO arrived .

Step 5 While-task(任务中活动)SB Page 19 , 2a .

1.Read the sentences .Make sure the Ss understand what they mean .

2.Play the tape twice .Order these statements .

3.Play the tape again ,correct the answers .

SB Page 19 , 2b .

1.Read the instructions . 2.Play the recording .Write “when” or “while” on each line .

3.Play the recording again ,correct their answers .

Notice: when / while

※ When comes before a quick action that happens only once .The word “while” comes from an action that continues for some time .