人教版八年级下英语第三单元教学设计

Unit 3 What were you doing when the UFO arrived ?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。6.了解一些自然科学知识和社会科学知识。Important and difficult points: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 .Period 1Teaching procedures :Step 1 Leading in 1.Greetings and free-talk .2.Check the homework .3.Dictate the words in Unit 2 .Step 2 Pre-taskSB 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-taskSB Page 18 , 1b .1.Read the instructions .Make sure the Ss understand what they should do .2.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 .3.Play the tape twice . Circle the correct responses .4.Check the answers .Step 4 Post-taskTalk about what people were doing when the UFO arrived .Step 5 While-taskSB 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 .Step 6 Post-taskSB Page 19 , 2c .1.Point ort the picture .Ask what each person is doing .2.Groupwork : Ask “What was doing when the UFO arrived ?”3.Ask a group to say its conversation to the class .Step 7 Grammar Focus Review the grammar box by asking some students to read the sentences .Homework :1.Go over the words in this unit 2.用介词或介词短语填空。They were talking the phone .I was the barbers chair .The boy was walking the street when a UFO landed .I had a very unusual experience Sunday .The alien visited the Museum Flight .Period 2Teaching procedures :Step 1 Leading in1.Greetings and free-talk .2.Check the homework .Step 2 While-taskSB Page 20 , 3a .1.Read the instructions .2.Read the e-mail by the Ss first .Number the pictures in the correct order .3.Explain something .4.Practice reading and listen to the tape .SB Page 20 , 3b .Cover the story .Look at the pictures and take turns to tell the story . I think this activity is hard to most of the students .If necessary , do it as homework .SB Page 20 , Part 4 .What were you doing at these times last Sunday ?1.Read the sample dialogue in the box .2.Look at the table .Read the times for the Ss .3.Pairwork : Talk about what they were doing at different times .4.Write down your answers .5.Practice reading .Step 3 Post-taskMake an interview .Interview two cla