Unit 4 课时3 Grammar Focus（4a-4d）-2025-2026学年八年级下册英语同步辅导（人教版）

能力提升 完形填空。 without worrying about 10 into the You must hear a popular song Lake water. Baikal.Then what do you 1 about Lake ( )1.A.worry B.dream Baikal? C.care D.know Lake Baikal in Russia is one of the )2.A.common B.ancient world's most 2 lakes.It has a history of 25 C.difficult D.dangerous to 30 million years.It's also the world's )3.A.At first B.For example deepest freshwater lake.It's up to 1,637 C.In fact D.At most metres deep.3,it's a lake with nearly )4.A.so B.such 20%of the unfrozen(未结冰的)freshwater on C.like D.as the earth's surface.The water is 4 clean )5.A.shape B.place that people can drink it directly(直接地). C.front D.control Lake Baikal is in the 5 of the banana )6.A.volunteers B.climbers and people also think it looks like a crescent C.tourists D.keepers moon(新月).Lake Baikal is beautiful and a lot )7.A.enjoy B.repair of 6 come to visit it every year.They C.copy D.develop usually come in summer.It is not cold then. ( )8.A.Because of B.Even though They can 7 the blue water and the green C.So that D.What's more mountains.However,some visitors prefer to )9.A.long B.large come in winter.8 it is freezing,they can C.wide D.thick have fun on the ice.The ice can be up to 60 cm ( )10.A.throwing B.cutting 9.They feel free to do whatever they like, C.leading D.falling 课时 3 Grammar Focus(4a~4d ]重点知识 这把尺子和那把一样长。 (2)否定句：“not as(so)十原级十as”表示“不 一、形容词、副词的比较级与最高级 如…那样”。 英语中的形容词和副词常用原级、比较级 eg:Jenny is not as/so tall as Kate. 和最高级来表达事物的等级差别。 珍妮不如凯特高。 1.原级 2.比较级 (1)肯定句：“as十原级十as”表示“像…一 (1)用于两者之间的比较，其结构是：含有形 样…”。 容词或副词比较级的主句+than引导的从 eg:The ruler is as long as that one. 句（常省略与主语相同的部分）。 eg:He jumped higher than you. cities in China.杭州是中国最美的城市之一。 他比你跳得高。 二、大数字的表达与读法 (2)“比较级十and十比较级”表示事物本身 1.大数字的表达 程度的逐渐增长，意为“越来越…”。 (1)从数字的右端向左数，每三位数加一个 eg:He is running faster and faster. 逗号。 他跑得越来越快。 (2)从右端向左端开始，第一个逗号处读 (3)“the十比较级..，the十比较级..”表示 thousand(千)，第二个逗号处读million(百 一方的程度随着另一方的变化而平行变化， 万)，第三个逗号处读billion(十亿)。 意为“越…，就越…”。 (3)读时通常在hundred后加and,如果读 eg:The more you eat,the fatter you will be. 数中百位数为0，则在thousand后加and。 你吃得越多，就会越胖。 eg:l8,357,089读作eighteen million,three 3.最高级 hundred and fifty-seven thousand,and (1)用于三者或三者以上事物间的比较。形 eighty-nine 容词的最高级前要加定冠词the,但是副词 2.大数字的用法 最高级前的the可以省略。 表示确切的数量直接用基数词，表示不确切 eg:He is the tallest of us all. 的数量用hundred,thousand,million, 他是我们所有人中最高的。 billion的复数形式再搭配介词of。 (2)“Which/Who is+the+形容词最高级， eg:Millions of balloons are flying in the sky. A,BorC?”表示“A、B和C中，哪一个/谁 数百万只气球正在空中飞舞。 最…？”。 【特别提醒】英语中没有“万”这个单位，表达 eg:Which is the biggest,the sun,the moon “万”时要借助thousand.,如“一万”用ten or the earth?太阳、月亮和地球哪一个 thousand。 最大？ eg:As the Chinese saying goes,"It is better (3)“one of the+最高级十复数名词”表示 to travel ten thousand miles than to read ten “最…之一”。 thousand books.”正如中国的一句谚语所 eg:Hangzhou is one of the most beautiful 说：“读万卷书不如行万里路。” 基础巩固 一、用括号内所给单词的适当形式填空。（语 3.We are proud of the great changes in 法专练) Changchun and it will be even 1.The (hard)you study,the (good). (good)grades you will get. 4.Do you think basketball is (popular) 2.Few of us like Peter because he thinks than football? 5.Bill never does homework as (little)of others than himself. (careful)as Tina.He makes lots of mistakes. 二、【跨地理学科】写出或拼出数字。（语法专练） )12.25,768 cubic metres of water 6.Mount Qomolangma is about Inga Falls each second. (eight thousand,eight hundred and forty- A.runs through eight)metres high. B.turns down 7.Mount Kilimanjaro is five C.pours down thousand,eight hundred and ninety-five) D.goes through metres high. )13.I hope I can speak English 8.The Great Barrier Reef(大堡礁)covers an you one day. area of (three hundred and forty- A.as good as B.as well as five thousand)square kilometres. C.as better as D.as best as 9.The East African Rift Valley is about 4,000 )14.During the exam, you are, ( )miles long. mistakes you'll make. 10.The Taklimakan Desert is about 337,000 A.the more careful;the less square kilometres, B.the more careful;the fewer making it one of the world's largest C.the more careless;the less deserts. D.the more careless;the fewer 三、单项选择。 )15.Yuan Longping is recognized as one ()11.In summer,many children like to of agricultural scientists in swim in the swimming to the world. keep cool. A.great A.pool B.pond B.greater C.river D.waterfall C.greatest D.the greatest 能力提升 阅读短文，从方框中选择适当的词并用其正确 From Guilin to Yangshuo,the scenery on 形式填空。 both 3. of the Lijiang River is beautiful beyond words.The 4. way ink sad after side nothing and to enjoy its beauty is to take a boat.It will wonderful say run good carry you away from the city and into a "Guilin's scenery is the best in the world, peaceful and 5. world.You need to and Yangshuo's scenery is the best in Guilin," do 6. but bring your imagination goes the old 1. Why is the scenery of 象力)and a camera and keep your eyes open. Guilin and Yangshuo so great?It's probably The hills,clear water,tall bamboo...It feels because there is a beautiful river 2. like you are visiting in a Chinese 7. through them.It is the Lijiang River. painting!Your guide will tell you lots of stories behind the different mountains.The wife carried their baby on her back 9. story behind Xianren Rock and Wangfu Rock and turned into Wangfu Rock. must be on the list.A young man died of The Lijiang River is beautiful.Why not hunger 8. giving all his food to a poor visit this amazing place to see it with your own old man and turned into Xianren Rock.His eyes 10. feel it with your own heart? Section B Why do we explore nature? 课时4 Section B(1a~-le) 重点知识 living/housing/working conditions生活/住 房/工作条件 1.northern的用法 under...conditions在…条件下 northern作形容词，意为“北部的；向北的”。 on no condition(=under no condition)无论 名词形式为north“北部；北方”。常见短语： 如何都不；绝不 northern China中国北方 eg:Although that car is old,it's in perfect northern Europe北欧 condition.那辆车虽然I旧了，但是车况完好。 eg:The northern part of our country has a The rescue was carried out under extremely lot of snow in winter.It's very cold there. difficult conditions.营救是在极为艰苦的条 我们国家的北部地区冬天有很多雪。那里 件下进行的。 非常冷。 You must on no condition tell them what 知识拓展用于描述地理位置或方向的词 happened.你绝不能告诉他们所发生的事。 还有： 3.辨析dead,die,death与dying eastern adj.东部的；向东的。east n.东； 东方； 形容词，意为“死的；失去生命 southern adj.南部的；向南的。south n.南； dead 的”，表示状态，用来作表语或 南方； 定语。 western adj.西部的；向西的。west n.西；西 不及物动词，是非延续性动词，表 方。 die 示动作，意为“死”。 2.condition的用法 death 名词，意为“死亡；死”。 condition作名词，意为“环境；条件；状态”。 die的现在分词，也可用作形容 常见用法： dying 词，意为“垂死的；临终的”，常用 in good,/bad/excellent..condition状况好/ 作定语。 糟糕/极佳…9.length 10.importance 三、11.learn about 12.the development of 13.at all costs 14.By the way 15.Some parts of 四、16.C17.A18.B19.D20.A 能力提升 1.D2.B3.C4.A5.A6.C7.A 8.B9.D10.D 课时3 Grammar Focus(4a~4d) 基础巩固 -1.harder;better 2.less 3.better 4.more popular 5.carefully 二、6.8,8487.5,8958.345,0009.four thousand 10.three hundred and thirty- seven thousand 三、11.A12.C13.B14.B15.D 能力提升 1.saying 2.running 3.sides 4.best 5.wonderful 6.nothing 7.ink 8.after 9.sadly 10.and Section B Why do we explore nature? 课时4 Section B(1a~1e) 基础巩固 -1.above 2.distance 3.degrees 4.shoulders 5.curiosity 二、6.climber7.northern8.changeable 9.successfully 10.simply 三、11.only if 12.bit by bit 13.risk their lives 14.doing research 15.for the first time 四、16.B17.D18.C19.C 20.A 能力提升 1.A2.D3.E4.C5.B 课时5 Section B(2a~3c) 基础巩固 -1.travellers 2.curious 3.alive 4.sand 5.includes 二、6.natural7.risky8.northeastern 9.southern 10.located 三、11.far12.high13.heavy14.large 15.long 16.often 17.deep 18.much 19.fast 20.soon 能力提升 -1.Can you tell me something about them/... 2.Where are they/... 3.How high is it/... 4.Yes/.. 5.They are important/... 二、6.wonders7.changeable8.northern 9.to make 10.above 11.themselves 12.faster 13.height 14.reaching 15.so