选修六Unit4公开课导学案.doc

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1、韦良金公开课导学案it在强调句中的用法学习目标：1.Grasptheuseofemphasissentences.2.Tobeabletousethestructurecorrectly.3.Hopestudentscanuseemphasissentencesintheirwriting.学习重点：Learnnewstructures:emphasissentences学习难点：Masterhowtouseemphasissentencesinwriting.学习过程：Step1复习Unit3语法it的用法（一）1.用做人称代词1.）指代前面的名词或前面提到过的事。2.）

2、指代性别不明的child或baby。3.）指代未出场的身份不明确的人。4.）指代前文中的this，that。2.用作非人称代词it用作无人称的主语，不指物，而指时间，天气，气候，季节，距离等自然现象，或指事物的状态。3.It作形式主语和形式宾语Step2学习新知：二.it在强调句型中的用法1、探究发现①Itistheeffectsofglobalwarmingthatnooneknows.②Itisactivitiesfromhumanbeingsthatdosomedamagetotheatmosphere.③Itisfossilfuelsthatmuchoftheene

3、rgyusedtolightandheatourhomescomesfrom.我的发现这些句子都是_________，句中的划线部分标出了句中的强调句结构，即：____________＋被强调部分+____________,句首词用“it”；be动词总是用单数形式，即is或was。连接词一般用that.总结：强调句的陈述句式It+is/was+被强调成分+that(指人时也可用who或whom)+剩余部分。强调句主要强调什么？2.小试牛刀：用强调句改写下列句子。1）Yourcontributioncounts.________________________________

4、____________________________2.）Activitiesfromhumanbeingsdosomedamagetotheatmosphere._____________________________________________________________3.）Iamtoblameforthis.__________________________________________________________4.）Nooneknowstheeffectsofglobalwarming.___________________________

5、________________________________5.）Muchoftheenergyusedtolightandheatourhomescomesfromfossilfuels._______________________________________________________________6.）Then,wegotalongwellwitheachother.__________________________________________________________________7.）Theymeteachotherinthatsup

6、ermarket._____________________________________________________________________8.）Iwastaughthowtodrivelastyear._________________________________________________________________3.考一考：根据要求写出相应的强调句Hemetanoldfriendintheparkyesterday.强调主语：___________________________________________________强调宾语：_

7、________________________________________________强调地点状语：________________________________________________强调时间状语：___________________________________________________强调谓语动词：_____________________________________________________4.补充归纳：强调句的一般疑问句式Is/Wasit+被强调部分+that/wh