八年级下册英语第八单元第三课时电子教案

1、本课第3课时累计47课时本课课型语法课八年级英语备课组 金艳玲 Unit 8 Have you ever been to a museum?教学目标及重难点教学目标及重难点教教 学学 环环 节节板板 书书 设设 计计反反 思思 后后 记记教教 学学 资资 源源返回目录知识与技能1.重点单词：technology,French 2.重点句式：What do your parents think about our plan? She is interested in science and technology and loves to imagine what the world will b

2、e like in 50 years.过程与方法通过教师的讲授和学生记笔记的形式学习现在完成时。情感态度与 价值观通过本课的学习，培养学生的文学鉴赏能力，陶冶思想情操.教学重点1.现在完成时态的用法。2.所学过的各种时态的区别。教学难点各种时态的灵活运用。返回返回目录目录返回目录复习导入复习导入新知教学新知教学巩固拓展巩固拓展小结升华小结升华布置作业布置作业课外拓展课外拓展Step 1 Lead-inRead the following sentences we have seen.Have you read Little Women yet? Yes, I have./ No, I have

3、nt. Has Tina read Treasure Island yet? Yes, she has. She thinks its fantastic.Have you decided which book to write about yet?Yes, I have. Ive already finished reading it. It was really good.计划用时 5分钟二次修改教学环节Step 2 现在完成时用法：1.表示过去发生或已经完成的某一动作对现在造成的影响或结果。e.g. Have you had your lunch yet?Yes, I have. Ive

4、 just had it. (现在我不饿了。)2.表示动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。e.g. I havent seen her these days. Ive known Bob for three years. Ive been at this school for over two years. 时间状语：already, yet, just, ever, never, before。构成：现在完成时是由“助动词have / has+ 动词的过去分词”构成的，规则动词的过去分词构成与过去式相同，不规则动词的过去分词则需逐个记忆。 动词的过去式的变化和

5、过去分词的变化并不完全相同。我们对它们作了一个大致的分类。 (注：例子中单词的变化顺序为：动词原形 动词的过去式 动词的过去分词)一.过去式和过去分词的变化相同规则变化：计划用时 10分钟二次修改教学环节1.一般在动词词尾直接加ed。如：pick picked picked; wish wished wished; stay stayed stayed2.以不发音的e结尾的动词后面加d。如：like liked liked; hope hoped hoped; phone phoned phoned 3.以“辅音字母 + y”结尾的动词，变y为i，再加-ed。如：study studied s

6、tudied; hurry hurried hurried; reply replied replied.4.词尾只有一个辅音字母的重读闭音节动词，要双写辅音字母，再加-ed。如：stop stopped stopped; clap clapped clapped不规则变化：5.以不变应万变。如：let let let; put put put; read read read6.若中间有双写e，则去掉一个e，单词末尾再加t。如：feel felt felt; keep kept kept; sleep slept slept结尾的字母d变t。如：lend lent lent; build bu

7、ilt built; 计划用时 10分钟二次修改变为以-ought或-aught结尾。如：buy bought bought; bring brought brought; catch caught caught; teach taught taught教学环节句式1.肯定句：主语 + have / has + 过去分词 (+ 其他)2.否定句：主语 + have / has + not + 过去分词(+ 其他)3.一般疑问句：have/ has + 主语 + 过去分词(+ 其他)4.特殊疑问句：1) 特殊疑问词 (不是句子主语) + have / has + 主语+过去分词 (+ 其)2)特

8、殊疑问词(是句子主语)+have / has+过去分词(+ 其他)计划用时 5分钟二次修改教学环节1.Write the forms of the past tense and past participle: drink _ _ see _ _ find _ _ leave _ _ tell _ _2.单项选择。Why is Mr. Yang still in the teachers office?Maybe he _ his work yet.A. doesnt finish B. hasnt finished C. havent finished3.Finish 4a, 4b and

9、4c.计划用时 5分钟二次修改教学环节Words: technology,French .Important sentences: What do your parents think about our plan? She is interested in science and technology and loves to imagine what the world will be like in 50 years.语法: 现在完成时构成：have/has+动词的过去分词现在完成时的用法以及和哪些时间状语连用，还有动词过去分词的变法和基本的句式。计划用时 3分钟二次修改教学环节1.Recite words and sentences.2.Review the grammar.计划用时 2分钟教学环节already和yet都可以作为现在完成时的标志词，但它们的用法不同.already一般用于肯定句中。如：We have already cleaned up our classroom.注意：already用于疑问句中时通常表示惊奇。如:Have you finished your homework already?