广州版初一上册英语Unit3名词、there-be句型.doc

广州版初一上册Uint3同步教学目标:1、 巩固Unit 3重要单词、常考短语和句型的用法2、 掌握可数名词与不可数名词的用法和there be句型与have的区别教学重点、难点:1、掌握Unit 3常用单词、短语和句型的用法2、熟练掌握可数名词与不可数名词、there be句型的用法 教学步骤：【课堂演练】一、巩固Unit 3单词和短语的用法：（一）朗读Unit 3新单词，纠正学生的发音，并讲解其用法二）根据首字母提示填空：1. The T-shirt is too l______________. I want a smaller one.2. The earth is in danger. We should do our best to p_________________ it.3. We use the light and heat from the Sun for e________________.4. You run too fast. I can’t c______________ up with you.5. ---- Can you repair it? ---- No p_________________. 6. It is very i___________________ for us to learn English well.7. Animals are our friends. We m______________ protect them.8. The g______________ near the river is soft.（三）完成句子：1. 河流能为我们提供干净的水。

The river can __________________ us ______________ water.2. 我们不应该把垃圾倒进河流里 We shouldn’t ____________ waste _____________ rivers.3. 每天人们都扔掉大量的垃圾 People _______________ _____________ a lot of rubbish every day.4. 每天人们捕捉大量的鱼，以至于海里的鱼越来越少了People catch so many fish every day that there are __________ and ___________ fish in the sea.5. 新鲜的空气让我们能够健康地活着 Fresh air ________________ us _______________ very well.6. 许多动物也生活在陆地上 Most animals live ___________ _____________ ______________.7. 对我们来说，完成这项工作很困难。

It’s _________________ for us__________ _____________ the work. 8. 当老师走进教室时，我们停止了讨论When our teacher came in to the classroom, we _________________ ___________________. 二、课本内容讲解三、Unit 3知识点梳理：1、【词义辨析】on earth与on the earth：若表示“在地球上”，on earth和on the earth都可以；若表示“究竟”，只能用on earthWhy on earth didn't you tell me the truth? 你到底为什么不跟我说实话？ Who on earth told you that? There are millions of living things on the earth.2、on the land在陆地上 3、under the water在水下4、provide sb. with sth. = provide sth. for sb. 为某人提供某物The farmers provide us with grain and vegetables. = The farmers provide grain and vegetables for us.5、put … into …把……倒入……；throw … into …把……扔到……6、【词义辨析】stop doing something“停止做某事”，指停止正在做的事情；stop to do sth.“停下来做某事”，指停下手中的事情去做另外一件事。

He stops to make a call. 他停下手中的活去打 He stops making a call. 他挂掉了7、throw away扔掉；put away把……收起来 8、lift … up将……抬起，举起9、keep … alive让……活着；keep … doing sth.让……一直做，坚持做keep是“保持”的意思，后接形容词，表示“使某人或某物保持某种状态”，接动名词，表示“让某人一直做某事” We tried to keep him alive but to no avail. He kept me waiting for half an hour.10、take a photo of = take photos of给……拍照11、fewer and fewer越来越少 【注意】few与little的用法【词义辨析】（1）“比较级 and 比较级”表示“越来越……”She looks more and more beautiful. 她看起来越来越漂亮In summer the days get longer and longer. 夏天白天越来越长。

2）“the + 比较级，the + 比较级”表示“越……，越……”，相当于一个比较状语从句，后一个“the + 比较级”为主句The more I read the book, the more I liked it. 这本书我越看越喜欢The harder you work, the more progress you will get. 你越努力，身体越强壮12、ask sb. to do sth.“让某人做某事”，否定形式为：ask sb. not to do sth.；ask for索取，要求You can ask police to help you. We can ask people not to eat shark fin soup.13、It is + adj. +for sb. to do sth.与It is + adj. + of sb. to do sth. 的区别：（1）若形容词是描述不定式行为者的性格、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用of sb.。

It’s very kind of you to help me. 你能帮我，真好It’s clever of you to work out the maths problem. 你真聪明，解出了这道数学题2）若形容词仅仅是描述事物，不是对不定式行为者的品格进行评价，用for sb.，这类形容词有difficult，easy，hard，important，dangerous，（im）possible等It’s very dangerous for children to cross the busy street.It’s difficult for us to finish the work. 对我们来说，完成这项工作很困难四、可数名词与不可数名词用法讲解：（一）可数名词单数变复数：1、规则变化：情况构成方法例词读音一般情况下在词尾加-sbook—books, map--maps-s在清辅音后发/s/音tree—trees, bag--bags在元音和浊辅音后发/z/以s, x, ch, sh结尾在词尾加-esglass-glasses, box--boxes-es发/ i:z /音以辅音字母加y结尾改y为i加-escity-cities, baby-babies-ies发/ iz /音以元音字母加y结尾词尾加-estoy--toys, key--keys-s发/z/音以f或fe结尾改f或fe为v加-eswife-wives, knife-knives-ves发/vz/音辅音字母结尾加o结尾表示有生命的词尾加-espotato-potatoes, tomato-tomatoes, hero-heroes-es发/z/音表示无生命的词尾加-spiano-pianos, photo-photos-s发/z/音元音字母加o结尾词尾加-sradio--radios, zoo--zoos-s发/z/音2、不规则变化：构成例词单复数同形sheep→sheep, deer→deer, fish—fish Japanese→Japanese, Chinese→Chinese元音发生变化man-men, woman→women, tooth→teeth foot-feet, goose-geese, mouse-mice词尾加-en或-renchild-children, ox-oxen牛复合名词单复数变化主要词改为复数boy student-boy students男学生，apple tree→apple trees含man或woman的复合名词，前后两词都要改为复数形式a woman teacher -- two women teachers两名女教师a man doctor -- three men doctors三名男医生含有man，但不是合成词的，在词尾加sGerman-Germans，Russian-Russians，American-Americans，Indian—Indians，Canadian--Canadians只有复数形式的名词clothes, trousers, shorts, jeans, pants裤子, glasses, chopsticks, （二）不可数名词：1、不可数名词是不能直接用数量来计数的词，不能直接用冠词a / an来修饰，没有单复数形式，常见的不可数名词有：milk, water, coco, juice, beer, coffee, chocolate, rice, salt, sugar, air, rain, snow, fog, blood, bread, meat, beef, chicken（指“鸡肉”时为不可数，指“活鸡”时为可数）, fish（用法同chicken）, information, news, advice, fun等。