初中英语人教版八年级上册if引导的条件状语从句.doc

if引导的条件状语从句教学设计（Unit 10 Grammar） 郑州市第七十六中学 赵芳琳Learning objectives:1、Master the structure and use of conditional sentences with “if”.2、Be able to make the if-clause sentences.3、Learn about how to make our earth a better place.Teaching aids:PPTLearning procedures:Step 1: lead inWhats the weather like today? How about yesterday?(show the pictures) If we have hazy weather,we will stay at home. /dont go out. /we should drink more water.We call the sentences with “if” conditional sentences.This is what we will learn today. Please look at the learning objectives（学习目标）:1.Master the structure and use of conditional sentences with “if”.2.Be able to make the if-clause sentences.3. Learn about how to make our earth a better place.（设计意图：以讨论日常生活中对学生影响较大的天气为话题，可以活跃课堂气氛，激发学生的好奇心，引出本单元的新句型和本节课的学习重点。）Step 2:pre-task preparation1.1）T:If it is sunny this weekend, what will/wont you do ?(show 4 pictures) S:If it is sunny this weekend, I will play football with my classmates. If it is sunny this weekend, we will go on a school trip. If it is sunny this weekend, I wont stay at home. If it is sunny this weekend, I wont watch Tv. 2).Read these sentences. Work in groups and study by yourselves.我们把上面四个句子称为if引导的条件状语从句，我们把if引导的句子叫 做从句，另一个句子叫做主句。同学们,观察四个句子中的从句和主句，你发现 了if从句的意义是什么？符合什么规律？if条件状语从句表示:在某条件下，某事很可能发生。 从句用_(时态)，主句用_(时态)。 在if引导的条件状语从句中，if条件句位置灵活。你能发现什么规律吗？ If it is sunny this weekend, we will go on a trip. =We will go on a trip if it if sunny this weekend. 结论：(1)条件句,放在前,逗号要放句中间； (2)主将从现。（设计意图：引导学生学会谈论新的句型结构，初步了解if从句的结构，为下 一步的话题深入做铺垫。）2. T:If you dont want to stay at home this weekend,what will you do ? Where will you go? S:I want to go shopping. T: If you have enough money, what will you buy?(show some pictures) S:I will. T:How about others? S:I will go to the library. T:What are the rules of the library? Ss:Keep quiet.Dont run.Dont eat or drink. T:So,if you to go the library,. Ss:If you go to the library,keep quiet. /dont run. /dont eat or drink. . 同学们,观察这三个句子中的从句和主句，你发现了什么规律？ if引导的条件状语从句，从句用，主句用即。结论：主祈从现（设计意图：在生活中运用语言。激发学生们了解特定场合要遵循的规则，使用恰当句型。暴露容易出错的问题和错误，以培养孩子细心做事的习惯，从而使他们的思维更加缜密。）3.Ifyoufeelhungry,youshouldeatsomething.Ifyoufeeltired,youmusthavearest.Ifyouareill,youshouldgotoseeadoctor.Ifyourideabikeinthestreet,youmustbeverycareful.T: Read these sentences, what rules can we get?Ss:if引导的条件状语从句，从句用，主句可以用含有 的句子。结论：主情从现（设计意图：在使用if从句时，怎么准确表达生活中可能会出现某种情况时所采取的的措施，使学生在掌握知识的同时，也了解生活常识，提高生活能力。）思考小结if条件状语从句表示在某条件下，某事很可能发生。if引导的条件状语从句，从句用 (时态)，主句用 、_或含有 的句子。（if条件句位置灵活，可直接放在主句后面，但若if条件句放句首，从句后面要加）（设计意图：再次概括总结if从句的语法知识，使学生知识条理化，理论化，为下一步的练习做准备。）Step 3、while-task procedure:1.Finish the grammar exercise:在正确的答案下划一条线。 1). If it (wont/dont/doesnt/ isnt) rainy, we (will take/ take/takes) walk outside. 2). If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once. 3). If he (will have/have/has) money, he (will build/build/builds) a science lab. 4).Dont wait for me if I (am/ will be) late. 5). I (will call/ call) you if he (will stay/stay /stays) at home. 6). (Will / Do/ Does) he visit the museum if he (wont / dont/ doesnt) get tired? 7). Where (will/ do/does) they live if they (will miss/ miss/ misses) the bus? 8).If you (feel / will feel) hungry, you (should / must) eat something.（设计意图：通过此练习，使学生强化本节课的学习重点，暴露自己的问题，使学生深度思维，理性面对问题，真正掌握所学知识，不能纸上谈兵。）2.Think it over思考 I dont know if he _(come)to our party tonight. If he _(come), I will tell You. 结论: 当if作_讲时，用“主将从现”； 当if作_讲时，根据句意和时态选择合适的时态。（设计意图：通过此练习，使学生明白，做题时要用发散性思维，具体问题具体分析。）3. Sentence writing.If we want to make the earth a better place to live in ,what will you do ?Please write down your ideas on the paper by using the three sentence patterns of if-clause.If we want to save the earth,we will /we should/must/can /dos or donts（设计意图：学习的目的在于将知识输出，用于实践当中，也是情感教育的目的所在，通过写作，调动学生思维，培养学生社会责任感。）Step 4 homework1.Go over what we have