Unit 8 Have you read Treasure Island yet?
第二课时 Section A （3a－4c）
【课前预习】 1.预习导航： ①知识目标：
A.掌握常用动词的过去分词的拼写形式以及熟练掌握already, yet 在现在完成时中的应用。
B.核心句型预览：
1. —Have you read Little Women yet? —Yes, I have./No, I haven’t.
2. —Has Tina read Treasure Island yet? —Yes, she has. She thinks it’s fantastic. 3. —Have you decided which book to write about yet?
—Yes, I have. I’ve already finished reading it. It was really good.
②能力目标：体会现在完成时在阅读文章《鲁滨逊漂流记》中的应用以及对阅读文章的理解分析。
③情感目标：通过对《鲁宾逊漂流记》节选部分的学习，引导学生在生活和学习中要不抛弃不放弃。 ④重点、难点：
重点：1. 熟练掌握 already, yet 在现在完成时中的用法。 2. 掌握常用动词的过去分词形式。
难点：使用阅读技巧对阅读文章进行理解与分析。 2.预习任务：
预习本课内容，完成下面的任务：
任务1. 自主学习本课单词，并能根据所给音标正确拼写出下列单词： 1、[? i p] ___________ 2、[t u: l] _______________ 3、[ g ?n] ___________ 4、[m a: k] ________________ 5、[s ? n d] ___________ 6、[t ?′w ?:dz] ________________ 任务2. 翻译下列单词及短语。
①陆地；大地 ___ ②科幻小说 _____ ③科技；工艺 _______ ④法语 ______ 任务3. 翻译下列句子：
①我已经砍倒了树木，建造了房子。
_________________________________________________________
②我甚至学会了种植水果和蔬菜。
____________ _______ ③几周前，我在沙子上发现了另一个人的脚印。
_________________________________________________________ 【课中探究】 1.词义辨析:
要点探究 one… the other…, some… the others 的辨析
1. one… the other… 为固定搭配，用于两者之间，意为“一个……另一个……”。 例如：
He has two sons. One is a doctor, the other is a student. 他有两个儿子。一个是医生，另一个是学生。
2. some… the others…用于三者或三者以上，意为“一些……其余的……”。 例如：
Boys are on the playground. Some are playing basketball, the others are playing football. 男孩们都在操场上，一些正打篮球，其余的正在踢足球。 中考链接 （2012·山东济宁）Lily and her sister look the same. I can’t tell one from ____. A. other B. another C. the other D. others 2.语法聚焦：现在完成时 (Present Perfect Tense) 1) 现在完成时的定义：
（1）表示过去发生或已经完成的动作对现在造成的影响或结果。 —It’s so dark. 太黑了。
—Someone has turned off the light. 有人把灯关上了。
（2）表示从过去某一时间开始并一直持续到现在的动作或状态。常与since+过去的时间点，for+一段时间，so far等时间状语连用。
I have lived here for ten years.
我已经住在这里10年了。（从10年前开始，持续到现在还住这儿）
I have lived here since 2003. 自从2003年我就住在这儿。（从2003年开始，持续到现在还住这儿）
2) 现在完成时的构成及句式转换： 助动词 have/has + 过去分词
否定 haven ’t / hasn’t 助动词
疑问新疆 Have you …? / Has he…? ①I have finished my homework. (a 肯定句) ②I have not finished my homework. （否定句） ③—Have you finished your homework?
—Yes, I have. / No, I haven’t, （一般疑问句及肯定、否定回答） 3) 动词过去分词的变化规则：
①一般情况下加-ed；②以-e结尾的，加-d；③以辅音字母加y结尾的，变y为i加-ed；④重读闭音节单词，双写辅音字母加-ed。
练练吧 写出下列单词的过去式和过去分词形式： finish __________ — ____________ live __________ — ___________ carry __________ — _____________ stop _________ — ___________ go ____________ — _____________ see _______ — _________ forget _________ — _____________ 4) 现在完成时的标志：
①常与just, already, yet, ever, never, before, so far 等连用，强调动作的完成，不强调动作的持续。
Have you ever been to Japan? I have just finished my homework.
②for + 时间段；since + 过去的时间点；since + 段时间 ago；since + 一般过去时的句子。
They have known each other for five years. Since he was a child, he has lived in England. 【当堂达标】
一、根据句意或汉语提示写词。
1. We often see people take out ______ and shoot others in action movies. 2. Li Ming went to Paris three years ago, now he can speak _________ very well. 3. I think dictionaries and Internet are good _______(工具) for us to study English. 4. Look, Tim is walking t_______ the library. He wants to borrow some books.
5. —Would you like something e_____ to eat? —No, thanks. I’m full. 【课后巩固】
一、用括号内所给单词适当形式填空 (每题4分,共20分) 1. Judy has already _______ (finish) reading Little Women.
2. Tom and Mike have already _______ (decide) to learn Chinese on Internet. 3. Have you ________ (read) Alice in Wonderland yet? 4. Robinson ________ (have) already built a house on the island. 5. It often ________ (snow) in North China in winter. 二、按要求改写句子。(每空4分,共80分) 1. Has Jack read Tom Sawyer yet? （肯定回答） __________, ___________ ___________. 2. Has he cut down that big tree yet? （否定回答） __________, ___________ ___________.
3. They have found the lost books already. （改为一般疑问句并做否定回答） ________ they ______ the lost books _______? No, they __________. 4. Mr. Wang began to teach English in this school in 1999. （改为同义句） Mr. Wang _________ __________ English in this school since 1999. 5. They have lived here since 3 years ago. （就划线部分提问） __________ __________ have they lived here ? 6. Mary has gone to Taiwan. （就划线部分提问） __________ _______ Mary ___________?
7. Julia has not got home from school yet. （改为肯定句） Julia ________ _________ ________ home from school.
人教版英语八年级下册unit8 section A 3a-4c学案(无答案)
