Module 9 Unit 3 Language in use 课件 2023-2024学年外研版英语八年级上册

Module 9 Population Unit 3 Language in use 外研版英语八年级上册 1. That's a huge number. 2. The small local school in Parkville closed down five years ago, and getting to the nearest school in Arnwick takes her an hour by bus. 3. It said the world's population was about 7.8 billion in 2020. 4. Parkville was near Arnwick, a city with a population of 10,000,000. 教材链接 语法探究 冠词的用法和基数词的表示方法 一、冠词的用法 1. 不定冠词a/an 语法详解 a/an 的用法 a/an +单数名词 泛指某一类人、事物,或者是其中一个 a +辅音音素 university, useful, usual … an +元音音素 hour, honest, unusual, underground, ugly … 注意:字母“a,e,i,o,f,h,l,m,n,r,s,x”的读音是以元音音素开头。如:There is an “x” in the word. 2. 定冠词the the的用法 特指某人或某物;上文提到过的人或物 The book on the desk is mine. 表示世界上独一无二的事物 the sun, the moon, the earth the +序数词;the +形容词最高级 the first floor, the oldest man the +方位词 in the east the +形容词 表示“……一类人/物” the poor, the young the +姓氏(复数) 表示“……一家人/夫妇” the Whites the +乐器 play the violin 3. 零冠词 不用冠词 a/an/the的情况 时间名词(季节、月份、星期、节日)前,不用冠词 球类、棋类、三餐、学科名词前,不用冠词 名词前已有物主代词(my, your …)和指示代词(this, that, these, those),不用冠词 二、基数词的表示方法 1. 13~19的基数词,在个位数上加后缀-teen构成,并有两个重音:thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen 2. 20~90的整十数以-ty构成:twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety 3. 21~29由十位上20加个位上1~9构成,十位和个位之间加连字符号“-”,其他两位数以此类推。如:21 twenty-one, 44 forty-four, 98 ninety-eight 4. 多位数的读法 (1)从后向前数,每三位数加一个“,”;第一个“,”前为thousand(千);第二个“,”前为million(百万);第三个“,”前为billion(十亿),然后再逐段表达。 (2)每三位数中,前两位之间要加 and。如: 45,632,798读作forty-five million, six hundred and thirty-two thousand, seven hundred and ninety-eight 5. hundred, thousand, million, billion前与基数词连用表示确数时用单数形式,后面不加-s;与of连用表示约数时,后面必须加-s,且不可与数词连用。 序数词的表示方法 序数词=基数词+th,但以下几个特殊:one first two second three third five fifth eight eighth nine ninth twelve twelfth twenty twentieth 2. 分数的表示方法 分子用基数词表示,分母用序数词表示,分子大于1时,分母(序数词)应用复数形式。如: one third/a third 三分之一 three fifths 五分之三 由“分数(或百分数)+of+名词”构成的名词短语作主语时,谓语动词的单复数由of后面的名词来决定:名词为可数名词复数,则谓语动词用复数;名词为不可数名词,谓语动词用单数。如: A third of the land is covered by forests. 三分之一的陆地被森林覆盖着。 Two thirds of