Unit 2 知识点讲解课件 2024-2025学年人教版八年级英语上册

Unit 2 Section A 知识点讲解 1. How often do you exercise? 你多久锻炼一次？ exercise v. 锻炼 e.g. I exercise every day. Mr Smith exercises every morning in the park. exercise n. 运动、锻炼 (不可数名词)； 习题、体操 (可数名词) (常和动词 do 搭配使用，“体操”讲时多用复数) take/do exercise 做运动 do morning exercises 做早操 do eye exercises 做眼保健操 【语境应用】用exercise的适当形式填空。 1) My parents always ____________ in the morning. 2) You should take more __________ and you will be strong. 3) We do morning _________ at about 10:00 every day. 4) They have a lot of math _________ to do tonight. exercise   exercise  exercises  exercises 2. hardly adv. 几乎不 (表示否定概念) 常和can, could等连用，位于系动词be、情态动词或助动词后、行为动词前。 hardly ever 几乎从不 e.g. 他不太会说英语。 (翻译) He can hardly speak English. Peter几乎不迟到。 (翻译) Peter is hardly ever late. e.g. The boy studies hard at school. It’s raining hard now. The problem is very hard for me. hard adj. 难懂的；难做的 adv. 努力地；猛烈地 【语境应用】根据句意，用hard或hardly填空。 1) Peter works _________ to make more money. 2) It began to blow _________ at about 10:00 last night. 3) She is only ten months old, so she can _________ walk. 4) The question is difficult. It’s _________ for me to answer it. hard hard  hard hardly 这三个词都表示次数，once是一次，twice是两次，除了一次，两次，其他的次数表达都是数字 + times：三次是three times；五次是five times。 这些表次数的词后与一段时间连用，表示动作多长时间发生几次，即动作的频率。 3. once, twice, three times等次数的表达法。 【语境应用】翻译。 两周一次 ________________ 一年两次 ________________ 一个月两次 ________________ once two weeks twice a year twice a month full adj. 1) 忙的 同义词busy 2) 满的 反义词empty (空的) be full of 充满……的=be filled with   3) 吃饱了的 反义词hungry 4. Hmm … next week is quite full for me, Jack. 嗯……我下周已经安排得很满了，Jack。 e.g. He had a full weekend. The restaurant is full every day. I’m full, so I don’t want to eat anything. 【语境应用】I. 选出句子中full的含义。 A. 忙的        B. 满的       C. 吃饱了的 (  ) 1) Sorry, the hotel is full now, so you need to find another one. (  ) 2) No more for me, thanks — I’m full. (  ) 3) Her life is full and she doesn’t have time to relax. II. 翻译句子。 瓶子里装满了水。(翻译) The bottle is full of water. =The bottle is filled with water. B C A Ⅲ. 完成句子。 1) 今天早上厨房里全是烟。 The kitchen _______ _______ _______ smoke this morning. 2) 在Kate生病之前，她度过了一个丰富的人生。 Kate had a _______ _______ before her illness. 3) 不用再给我蛋糕了，谢谢。我吃饱了。 No more cake for me, thanks. _______ _______. was full of    full life  I'm full 英语口语中的习语，“为什么；怎么会”等意思。既可独立使用，也可在其后接句子，用来询问事情的缘由或状况。 5. How come? 为什么呢？（怎么会呢？） e.g. How come the sky is so blue today? —I didn’t even eat lunch today. —Really? How come? 6. How often do you have piano lessons? 你多久上一次钢琴课呢？ How often + 助动词 do/does/did + 主语 + do sth. ? 是对频率（多久一次）进行提问。 疑问词 how often (在这里助动词 do/does/did 是起疑问的作用) 与一般现在时或一般过去时连用，回答一般用表频率的副词 always, usually, often, sometimes, never 等或者是“次数+ 一段时间”，如 once/twice a month, three times a month, every year, every week 等。 e.g. 你多久上一次钢琴课？ 你一周上几次钢琴课？ How often do you have piano lesson? How many times do you have piano lessons a week? How often & How many times How many times 对次数进行提问，其答语为once, twice, three times 等表示次数的单词或短语。 Unit 2 Section B 知识点讲解 1. And twenty percent do not exercise at all! 还有百分之二十的同学根本就锻炼！ not … at all 根本不；完全不；一点也不 not at all 还可用于交际中，作回答道谢的客套语：不用谢，哪儿的话。 e.g. Andy isn’t good at playing chess at all. —Thanks for your help, Grace. —Not at all. 【语境应用】 I. 汉译英。 这只猫一点也不可爱。 The cat isn't cute at all. II. 单项选择。 —Thank you very much for speaking with us. —_______. A. Too bad   B. Good idea C. Not at all   D. Of course not C 2. Only two percent of the students watch TV one to three times a week.  只有百分之二的学生一周看一至三次电视。 Thirteen percent watch TV four to six times a week. 百分之十三的人一星期看四至六次电视。 What percent of the students do not exercise at all? 百分之多少的学生根本不运动? percent n. 百分之…… 1) 百分数的表达：基数词+ percent，percent无复数形式。 2) “百分数+ of + the +名词”作主语时，谓语动词的单复数形式由of后面的名词的数来决定：of后面是可数名词的复数形式时，谓语动词用复数形式；of 后面是不可数名词或可数名词的单数形式时，谓语动词用单数形式。 3) 再次使用“百分数+ of + the +名词”结构时，如果该名词在前面已经提到，可省略“of+ the+名词”部分。 4) 对percent前面的基数词提问时用疑问词what。 【语境应用】选词填空。 1) 30 percent of our drinking water _______(comes / come) from that river. 2) _______(What / How much) percent of the children watch TV every day? 3) 80 percent of the teachers in our school _______(is / are) women teachers. are comes What although conj. 尽管; 虽然; 即使 表达习惯中，表示 “虽然……, 但是……” ，although 不和but在同一个句子中使用，只能用其中一个。 3. Although many students like to watch sports, game shows are the most popular. 虽然许多学生喜欢观看体育节目，但游戏类节目却是最受欢迎的。 e.g. Although the car is old, it still runs well. The car is old, but it still runs well. I don’t want to go to bed, although it’s past midnight. It’s past midnight, but I don’t want to go to bed. 【语境应用】 I. 单项选择。 1) ________ it rained a lot, we enjoyed our holiday. A. Although    B. Because    C. Unless    D. However 2) ________ my grandpa is over 80 years old, he still looks strong and healthy. A. Although             B. Because    C. Unless 3) ________ it's a public holiday today, some firefighters in our city are still on duty. A. Although                B. Once     C. If A A A II. 翻译句子。 虽然Tom才五岁，但是他篮球打得很好。 Although Tom is only 5 years old, he can play basketball well. / Tom is only 5 years old, but he can play basketball well. 4. It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise. 通过使用网络或观看游戏类节目来放松是件好事，但我们认为最佳的放松方式是通过锻炼。 It is + adj. + (for sb.) to do sth. (对某人来说)做某事…… e.g. It is important for us to learn from others. 对我们来说向别人学习很重要。 It is good to relax ... 中的to relax在句中作真正的主语，it是形式主语; ... the best way to relax ... 中的to relax在句中作定语, 修饰前面的名词way。 through 用作介词时还可意为“穿过”。 e.g. Bill studies math by/through doing a lot of exercises. The river goes through the town from east to west. 3) by和through用作介词表方式时，都有“凭借；靠”的含义，后面接名词(短语)、代词或动词-ing形式。 【语境应用】完成句子。 1) You can make your dream come true ____________ (by / through) hard work. 2) My uncle makes money ___________ (by / through) writing. 3) The Yellow River goes __________ (by / through) Shanxi Province. 4) 那不是学英语最好的方法。 That’s not the best way _______ _______ English. 5) 对我来说用英语记日记很难。 _______ difficult _______ _______ _______ _______ a diary in English. by/through by/through through to learn It’s for me to keep 5. Exercise such as playing sports is fun … 诸如参加体育运动这样的锻炼方式是有趣的 …… such as 例如; 像……这样  such as & for example such as和for example都有“例如”的意思 such as用来列举例子时，其后紧跟所列举的内容，如人或事物等。 e.g. Cartoon characters (卡通人物) such as Mickey Mouse and Snoopy are still popular. Mary has many hobbies (业余爱好), such as swimming, dancing and running. e.g. Many countries, for example Mexico and Japan, have a lot of earthquakes (地震). My uncle visited many countries, for example, Australia. There are a lot of things to do in Beijing. For example, you can visit the Great Wall. We have many rules to follow at school. We must wear school uniforms (校服) every day, for example. for example用来举例时，常用逗号与被说明的内容隔开，for example给出例子时，也可以用句子来说明。 for example在句中的位置比较灵活，位于句首、句中或句末均可。 【语境应用】根据句意选用such as或for example填空。 1) Many boys, ________________, John and Mike, like basketball. 2) Mary likes to eat fruit ________________ bananas and apples. 3) We can do many things during the holiday. ________________, we can go swimming with Jack.    For example for example such as 6. Old habits die hard. 旧习难改。 e.g. It is important to work hard but we must also have time to relax. (翻译) 努力地工作是重要的，但我们也必须有时间放松。 谚语，表示习惯一旦养成，并非朝夕即可改变。 die hard (旧习惯、传统等)难以改变; 根深蒂固 hard adv. 费力地; 艰难地; 努力地 7. So start exercising before it’s too late! 所以赶快锻炼起来，不要等到来不及了！ e.g. 现在你知道你错了，但是已经太晚了。(翻译) Now you know you’re wrong, but it’s too late. 你应当更加用功，别等到为时过晚而赶不上了。(翻译) You should work harder before it’s too late to catch up. it’s too late 为时太晚；来不及了 it’s too late与before共同组成从句，表示“不要等到为时已晚；不要等到来不及的时候；趁着还来得及 。” $$