人教版8年级下unt3原创详细教案（共7课时）.docVIP

Unit 3 What were you doing when the UFO arrived ?Teaching goals :Words : barber shop , well , bathroom , accident , earth , silence , playground , around , strange , kitchen , modern , follow , shirt .when , while 引导的时间状语从句。学习过去进行时态。利用知识谈论过去发生的事情。复习过去式，学会讲故事。了解一些自然科学知识和社会科学知识。Important and difficult points:when , while 引导的时间状语从句。学习过去进行时态。Teaching aids : a tape-recorder , cards .Period 1Teaching procedures :Step 1 Leading in Greetings and free-talk .Check the homework .Dictate the words in Unit 2 .Step 2 Pre-taskSB Page 18 , 1a .Point to the sentences .Read the sentences .Explain what each one means .Look at the picture .Point out the six people .Match the statements with the people in the picture .Check the answers .Practice reading .Explain :A in front of 在…的前面 in the front of 在同一个空间的前部。B get out of 从…. 出去 C arrive in +大地名 arrive at +小地名 reach +地名 get to +地名 get +副词（home,there） Step 3 While-taskSB Page 18 , 1b .Read the instructions .Make sure the Ss understand what they should do .Look at the dialogue in the picture .Explain :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 Play the tape twice . Circle the correct responses .Check the answers .Step 4 Post-taskTalk about what people were doing when the UFO arrived .Step 5 While-taskSB Page 19 , 2a .Read the sentences .Make sure the Ss understand what they mean .Play the tape twice .Order these statements .Play the tape again ,correct the answers .SB Page 19 , 2b .Read the instructions .Play the recording .Write “when” or “while” on each line .Play the recording again ,correct their answers .Notice: when / while 1. when可指时间点，又可指时间段，从句中可用延续性动词，也可用非延续性动词。??2. while总是指一个时间段，从句中必须用延续性动词。 3.统一时态：主句过去式，从句也是过去式. Step 6 Post-taskSB Page 19 , 2c . Point ort the picture .Ask what each person is doing .Groupwork : Ask “What was …doing when the UFO arrived ?”Ask a group to say its conversation to the class .4. Expiain tak