Unit 4 课时3 Grammar（课件）英语沪教版八年级上册

Unit 4 Inventions 主讲人：XXX 课型：语法课 课时3：Grammar 学习目标： 我能够: 回顾形容词/副词的比较级和最高级的构成规则，熟记常见不规则变形。 运用基本句型：A+ be + as + 原级+ as + B。 能结合生活情境口头或书面运用比较级，最高级和同级比较，避免常见错误（如重复比较、遗漏定冠词 the）。 2 Lead in This wheel is _____. This wheel is _____ than the first one. This wheel is the _____ one of the three wheels. big bigger biggest Look at the pictures and fill in the blanks. 3 Lead in Cars travel_____. High-speed trains travel _______ than cars. Planes travel the _________ . fast faster fastest Look at the pictures and fill in the blanks. 4 Lead in The cake is ___________. This cake is _____________ than the first one. This cake is ______ __________ one in these three cakes . delicious more delicious the most Look at the pictures and fill in the blanks. delicious 5 Lead in Let’s have a review of what we learnt in the last unit. Rules 原 级 比 较 级 最 高 级 单音节词和少数双音节词 small fast nice large big hot easy early 多音节词和部分双音节词 convenient easily smaller smallest 一般在词尾加-er或-est faster fastest nicer nicest larger largest 以字母e结尾的，加-r或-st bigger biggest hotter hottest 以辅元辅结尾的重读闭音节，双写最后一个辅音字母加-er或-est easier easiest earlier earliest 以“辅音字母+y”结尾的双音节词，改“y”为“i”，加-er或-est more convenient most convenient more easily most easily 在词前加more或most 6 Presentation Read the passage and pay attention to the words in bold. 7 Presentation Some comparative and superlative adjectives are irregular. good / well many/much little bad(ly) / ill old far Adjective Comparative adjectives Superlative adjectives 年龄 辈份 距离 程度 better best more most worse worst older oldest elder eldest farther farthest further furthest less least 8 Presentation Listen to a song and fill in the blanks. As sly as a fox, as _______ as an ox. As ______ as a hare, as ______ as a bear. As ______ as a bird, as neat as a word. As ______ as a mouse, as______ as a house. strong fast brave free quiet big We use (not) as …as with the basic form of adjectives to compare things and people. 9 然后人类就驯服一些动物如马、驴子等作为乘坐工具或乘坐工具的动力（如：马车）。 Presentation Read the sentences below and pay attention to the words in bold. 1. With electric lights, people can do as many things in the evenings as they can in the day time. 2. A candle does not produce as much light as a light bulb. We use (not) as…as with many + the plural form of a countable noun or much + an uncountable noun to compare amounts. 10 然后人类就驯服一些动物如马、驴子等作为乘坐工具或乘坐工具的动力（如：马车）。 Presentation Read the sentences below and pay attention to the words in bold. 1. With electric lights, people can do as many things in the evenings as they can in the day time. 2. A candle does not produce as much light as a light bulb. We use (not) as…as with many + the plural form of a countable noun or much + an uncountable noun to compare amounts. 11 Presentation 1. Peter is not as/so strong as Sam. 2. I don’t run as/so quickly as you. 3. Vegetable is not as/so delicious as meat. Tom is less strong than Lilei I run less quickly than you. Vegetable is less delicious than meat. 如何表达甲在某方面不如乙？ 1. not as （so）+形容词或副词原级+as 2. Less +形容词或副词原形+than 12 Practice E1 Multiple choices. 1. Which is ____ seaon in Beijing? A. better B.good C.the best 2. Lin Tao jumped _____ in the long jump in the school sports meeting. A. farther B. farthest C.quite far 3. When winter comes, the days get _____. A.short and short B. shorter and shorter C.longer and longer 4. It takes _____ time to go to Beijing by plane than by train. A. more B. fewer C. less 5. Sound doesn’t travel as________ as light. A. fast B. faster C. fastest 13 Practice E2 Blank fillings. 1. 塔拉学习和蒂娜一样努力吗？ Does Tara work ____ ______ _____ Tina? 2.He works as hard as Tom.(改为否定句) He ________ ________ so hard as Tom. 3. This is __________________ (expensive) book in the bookstore. 4. The weather today is _______ (cold) than yesterday. 5. Her English is getting _______ (good). 6. __________ (much) you read, _________ (much) you know. 7. Hi, Mom is _______________ (popular) than any other film that I’ve ever seen. 8. He feels even ________ ( bad ) after taking the medicine, he has to go to see the doctor at once. as hard as doesn’t work the most expensive colder better The more the more more popular worse 14 Practice E3 Some historians have made a list of great inventions in the past 1,000 years. Look at the list and complete the conversation below with the correct form of the words in brackets. SuWen: I think movable type is the (1)_________ (good) invention in the past 1,000 years. Thanks to this, people could have books to read. Su Mei: Well, it is an important invention. However, I think the light bulb is an even (2)_________ (good) invention. It was hard to read and write at night before we had light bulbs. Which modern invention do you think is the most important? SuWen: Definitely the computer. It has been almost (3)_______________ (important, as ... as) the movable type. Su Mei: The things on the list are all great inventions. After all, life would be much (4)_________ (bad) without them! best better as important as worse 15 Production Look at the list of the great inventions in the past 1,000 years in Exercise 1. Then ask and answer the questions in pairs. (1) Which invention do you think is more important, the printing press or the light bulb? Why? (2) Which invention do you think is the most important? Why? (3) What other inventions do you think are as useful as those on the list? 16 Production 1. Which invention do you think is more important, the printing press or the light bulb? Why? I think the ________ is more important than _______. Here’s why: First, __________________. Second, _________________. Third, __________________________________________. In short, ____________________________________. 17 Production 1. Which invention do you think is more important, the printing press or the light bulb? Why? I think the printing press is more important than the light bulb. Here’s why: First, books became much cheaper and easier to make than before. This let more people learn to read and share ideas faster than ever. Second, it changed the most basic way humans learn. Without it, schools, science and even modern inventions like the light bulb might not exist today. Third, the printing press spread knowledge wider and more powerfully. It helped create the most important changes in history. In short, the printing press didn’t just make life better—it made progress itself possible. That’s why I believe it’s the more important invention. 18 Production (2) Which invention do you think is the most important? Why? I believe computer is the most important invention. Here’s why: First, computers let us study, work, communicate and create—all with one machine. Second, they changed the world faster than any other invention. For example, students from different places can get education online more easily. Most importantly, computers create new possibilities. Without them, we wouldn’t have the Internet, modern science or even self-driving cars! In short, computers touch more parts of our lives and drive the biggest changes. That’s why they’re the most important inventions. 19 Production (3) What other inventions do you think are as useful as those on the list? I think  ________ is as useful as those on the list. smartphone Artificial intelligence drone 20 变化规则（规律，不规律） 形容词、副词 比较级 最高级 句式结构 Summary 特殊用法 good, well, bad, many, much, little, far, old A + v. + 比较级+ than + B the +形容词比较级， the+形容词比较级 A + v. + 最高级+ in/of A + v. + as + 原级 + as + B Homework 基础作业：默写比较级和最高级不规则变化表格。 进阶作业：选择2种你比较熟悉的发明，用5-8句话对比特点，至少含3处比较级。 拓展作业：想象一个你想发明的物品，用4-6句话介绍它。说明它比同类发明更好的地方及最好的某类功能。 Thank you for your listening EVCapture4.2.1软件录制 Lavf57.25.100 本视频由湖南一唯信息科技开发的EV录屏软件录制，www.ieway.cn $$