英语人教版八年级下册unit5grammar.doc

瑞华实验学校2015年上期集体备课电子教案年级： 八 科目： 英语 执教者：_ 课 题Unit5 What were you doing when the rainstorm came?(Section A 4a-4c)第4课时教 学目 标1.重点词汇及短语的用法：have a look, icy, realize2.继续学习如何使用过去进行时。I3. 能够正确使用when和while个性修改教学重、难点能够正确使用when和while课堂设问What should I do?教学过程导Step 1 Lead-in 1. Revision2. Show the learning goals.学& 教学& 教Step 2 Grammar Focus 1.Have the students read the sentences in Grammar Focus.2.Have the students conclude the usage of the past continuous tense. 3.Tell the students the differences between when and while. 4 . Ss make some notes on the book.Step3 Tasks 1. Have the students finish 4a-4c, explaining the requirement to them.2.Check the answers together.Step4 Speaking(4c) What were you doing at these times last Sunday?1. Ask the students to fill in the chart first.2. Students work with a partner.3. Ask some pairs to act. Language points:以when和while引导的时间状语从句1) 延续性动词和非延续性动词延续性动词指动作可以延续一段时间, 而不是瞬间结束。如: work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结束。如: start、begin、hit、jump、knock等。2) 在本单元中, 出现了以when和while引导的时间状语从句。when表示“当的时候”。从句中既可用延续性动词, 又可用非延续性动词, 这些动词既可以表示动作, 又可表示状态。从句中的动作既可和主句的动作同时发生, 又可在主句的动作之前或之后发生。如： Mary was having dinner when I saw her .The boy was still sleeping when his mother got home yesterday morning .while表示“在的时候”、“在期间”。它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。While从句中必须是表示动作或状态的延续性动词。如：The weather was fine while we were in Beijing .She called while I was out. 如果主句的动作在从句的动作过程中发生，从句常用进行时。如:While we were swimming someone stole our clothes .Dont talk so loud while others are working.总结：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。另：while还可以 表示“而；然而；但”之意，用来说明和强调两种事情或情形不同。e.g. Tom is active and outg