1、八年级英语上册Unit 4课文解析（B部分）1.How would you feel? Disappointed? Angry? Sad? 你会感觉如何？失望？生气？悲伤？【用法讲解】 angry为形容词，译为“生气的、愤怒的”。【常见搭配】 be angry with sb. 生某人的气Be angry about/ at sth. 对某事生气Be angry with sb.for sth. 因某事对某人感到生气Eg: Dont be angry with me for not having written.别因为我没有写信而生我的气。The professor was angry abo
2、ut John for cheating in the exam.教授对约翰考试作弊十分气愤。We were angry with him for keeping us waiting. 我们对他让我们久等而生气。【即学即用】1.她母亲对她很生气。Her mother _ _ _ her.答案：is angry with2.For example, they work hard together to make their homes.例如，它们一起努力工作来建造它们的家园。【用法讲解】 example可为名词，译为“例子、榜样”。Eg: This is a good example of h
3、ow to write an essay. 这是一个如何写文章的好例子。【常见搭配】 for example 例如Set an example树立榜样Take .for example/ as an example of . 以.为例Eg: For example, apples and oranges are both fruits. 例如，苹果和橘子都是水果。Parents should set an example for their children. 父母应该为孩子树立榜样。Take this book as an example, it is very popular. 以这本书为
4、例，它非常受欢迎。【易混辨析】 for example与such as区别：For example“例如”一般用于列举一类人或事中的一个例子Such as “例如”一般列举同一类人/事中的几个例子，但必须少于前面所提总数，只能在所列举词前Eg: I know several languages, such as English and Chinese.我知道几种语言，例如英语和汉语。I like fruit, for example, I often eat bananas in the evening.我喜欢水果，例如，我经常晚上吃香蕉。【即学即用】1.他给我们树立了一个好榜样。He _ u
5、s _ _ _.答案：set; a good example3.When a bee finds new food, it uses a dance to tell the others where and how far away the food is.当一只蜜蜂找到新食物时，它用舞蹈告诉其它蜜蜂食物在哪里，离这多远。【用法讲解】 far sway (from .) 译为“离.远”，强调实际地理距离；far from译为“远离”，常表示心理距离、程度否定等。Eg: The movie was far from boring. 电影一点也不无聊。The cinema is far away
6、from my house.电影院离我家很远。【即学即用】1.她住得很远，所以不常来。She lives _ _ _ here, so she doesnt come often.答案：far away from4.However, the number of bees is dropping, and scientists are worried. 然而，蜜蜂的数量在下降，科学家很担心。【用法讲解】Number为名词，译为“号码、数字、数量”；number也可为动词，译为“编号、计算”。Eg: Whats your number? 你号码是多少？Number the pages in the
7、 book. 给这本书的每一页编号。Please number the total people. 请统计一下总人数。【常见搭配】 “a number of + 可数名词复数”译为“许多.”，作主语时，谓语动词用复数；“the number of + 可数名词复数”译为“.的数量”，作主语时，谓语动词用单数。Eg: A number of students in this school are from England.这所学校许多学生来在英国。The number of students in this school is 2000. 这所学校的学生数量是2000.worry为动词，译为“担
8、忧，发愁”；worry也可作名词，译为“忧虑、担心的事”。Eg: He has a lot of worries at the moment. 他目前有许多烦恼。【常见搭配】 worry about .= be worried about . 担忧.Eg: She worried about her health.= She is worried about her health. 她担忧她的健康。【知识拓展】 “疑问词+ 动词不定式”结构用来询问某件事的具体细节。Eg: First, you need to know how to do the mixing. 首先，你需要知道如何混合材料。
9、Can you tell me where to go? 你能告诉我去哪吗？【即学即用】( )1._ sheep _ eating grass on the hill.A.The number of; isB.The number of; are C.A number of; is D.A number of; are2.我的父母担心我的成绩。My parents _ _ _ my grades.答案：1.D2.are worried about5.They need our help, and there is a lot we can do. 它们需要我们的帮助，我们可以做的很多。【用法讲
10、解】we can do为定语从句，用来修饰先行词a lot。help在此处为动词，译为“帮助”；help也可为名词，译为“帮助”。【常见搭配】 help sb.(to) do sth.= help sb.with sth. 帮助某人做某事With the help of .在.的帮助下Eg: Please help me (to) learn English.= Please help me with my English.请帮我学英语。I improve my English with the help of my English teacher.在我英语老师的帮助下提高了我的英语。【即学即
11、用】1.在朋友们的帮助下，我把那件家具搬到新公寓里。_ _ _ _ a friend, I moved the furniture to the new apartment.答案：With the help of6.I felt disappointed when my favourite flowers died. 当我最爱的花死了时我感到很沮丧。【用法讲解】Favourite 可作形容词，译为“最喜爱的”，常用来修饰后面的名词，前面必须有形容词物主代词或名词所有格；Favourite 可作名词，译为“最喜欢的人/物”，后面不可接名词。Eg: favourite food 最喜欢的食物Her
12、 favourite subject is English.= She likes English best.她最喜欢的学科是英语。This book is my favourite. 这本书是我最喜欢的。【常见搭配】 句式“Whats ones favourite .”译为“某人最喜欢的.是什么？”，其同义句What .do you like best?Eg: Whats your favourite sports? = What sports do you like best? 你最喜欢什么运动？die为动词，译为“死去、去世”。【常见搭配】 die from 死于（外部原因）Die of
13、 死于（内部原因）Die for . 为.而死Die out 灭绝Die away 逐渐消失Eg: He died from a heart attack. 他死于心脏病。She died of cancer. 她死于癌症。Many soldiers died for their country. 许多士兵为国捐躯。Many species are dying out due to habitat loss. 许多物种因栖息地丧失而灭绝。The sound of the waves died away as we waled further into the forest.随着我们走进森林，海
14、浪的声音逐渐消失了。【易混辨析】 die、dead、dying、death区别die为动词，译为“死亡”；Dead为形容词，译为“已故的、死的”；dying为形容词，译为“奄奄一息的”；death为名词，译为“死亡”。Eg: His father died last year. 他的父亲去年去世了。The cat is dead. 猫死了。A dying man is lying on the street. 一个奄奄一息的人躺在街上。His mothers death was a great shock to him. 他母亲的去世对他是一个巨大的打击。【即学即用】1.They are st
15、ill grieving for their _ (die) child.( )2.The old man died _ heart trouble.A.of B.from C.with D.by( )3._ favourite animal is panda.A.I B.Me C.MyD.Mine答案： 1.dead 2.A 3.C7.They mean a lot to me. 它们对我来说意义重大。【用法讲解】 mean为动词，译为“表示.的意思、意味着”；mean也可作形容词，译为“吝啬的”。Eg: What does this word mean? 这个字是什么意思？Silence
16、means consent. 沉默就是同意。He meant no harm 他没有恶意。He is very mean with his money.他在金钱上很吝啬。【派生词】 meaning为名词，译为“意思”【常见搭配】 mean to do sth. 打算做某事Mean doing sth. 意味着做某事The meaning of . .的意思Eg: I mean to go, but my father would not allow me to. 我想去，但是我父亲不肯我去。Missing this train means waiting for another hour. 错
17、过这辆火车意味着你得再等一小时。Whats the meaning of this word? 这个字什么意思？【即学即用】1.Can you tell me the _ (mean) of this sentence?( )2.He means _ abroad for further study.A.go B.to goC.goingD.to going答案：1.meaning2.B8.However, not everyone understands their importance in nature.然而，并不是所有人理解它们在自然界中的重要性。【用法讲解】 not everyone
18、为部分否定，译为“并非所有人”或“不是每个人都”，即整体中的一部分被否定，而非全部，类似用法的词还有all、every、everyone、everything、both等。Eg: Not everyone likes football. 并非所有人都喜欢足球。Nature在此处为名词，译为“自然”，此时为不可数名词；nature作名词还可以为“本性、本质、类型”，此时为可数名词。Eg: The beauty of nature is breathtaking. 大自然的美令人惊叹。He has a kind nature. 他有善良的本性。The nature of this problem
19、is very complex. 这个问题的本质非常复杂。I like books of this nature.我喜欢这类书。【常见搭配】 human nature人性By nature 天生地Nature reserve 自然保护区Eg: Understanding human nature is important for writers. 理解人性对作家来说很重要。She is very optimistic by nature.她天性非常乐观。Many rare animals live in the nature reserve. 许多珍稀动物生活在自然保护区里。【派生词】 nat
20、ural为形容词，译为“自然的、天然的”。Eg: Man has dominion over the natural world. 人类拥有对自然界的统治权。Its natural that he should succeed.他成功是理所当然的。【即学即用】1.并非所有人都喜欢吃水果。_ _ _ like eating fruit.2.Its only _ (nature) to worry about your children.答案：1.Not all people2.natural9.This food lasts for over a year and it helps to cre
21、ate a lively and healthy ecosystem.这种食物会持续一年多，它帮助创造一个生机勃勃和健康的生态系统。【用法讲解】 Last在此处为动词，译为“持续”，last可作形容词，译为“最后的、末尾的”；last可作副词，译为“最后、上一次”；last可作名词，译为“最后的人（或事物）。”Eg: This battery lasts about eight hours on a single charge. 这款电池单次充电能持续使用约八小时。He was the last person to leave the office. 他是最后一个离开办公室的人。I saw h
22、im last at the party last night. 我昨晚在派对上最后一次见到他。He was the last in the race. 他是比赛的最后一名。【常见搭配】 at last最后、终于Last but not least 最后但同样最重要的是Last time上一次Eg: At last, we arrived at the airport on time. 最后，我们按时到机场了。Last but not least, Id like to thank all the volunteers.最后但同样最重要的是，我要感谢所有志愿者。Last time I checked, the store was still open. 我上次看到的时候，商店还是开着的。【即学即用】( )1.Each lesson _ an hour.A.last B.lasts C.lasted D.is lasting答案：B6
