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英語人教版二輪復(fù)習(xí)學(xué)案專題4—數(shù)詞-展示頁

2025-04-02 07:45本頁面
  

【正文】 億),逗號中間的數(shù)字按三位數(shù)讀。 The puter only cost me two thousand yuan. 這臺電腦僅花了我2000元。7. 基數(shù)詞在句中可以作主語、賓語、定語、表語或同位語。(作主語) Tom has four apples. I have five. 湯姆有4個蘋果,我有5個。(作定語) My brother is seven. 我弟弟七歲了。(作同位語)【典例精析】1. — How many teachers are there in your school? — About four __________. A. hundreds of B. hundred C. hundreds 2. The earthquake in Ya’an left __________ people homeless. A. two thousands B. thousands of C. two thousands of D. two thousand of 考點二 序數(shù)詞’th構(gòu)成,個別特殊形式的需要單獨記;20以上的 序數(shù)詞僅最后一個詞為序數(shù)詞形式,其他的詞還是基數(shù)詞形式。 基數(shù)詞變序數(shù)詞口訣: 基變序,有規(guī)律,詞尾要加th; 一二三,特殊記,詞尾分別tdd(first,second,third); 八去t,九去e,ve要用f替; ty變作tie,再加th莫忘記; 若遇幾十幾,只變個位就可以。 His father has had two cars, but now he’s going to buy a third one. 他爸爸已經(jīng)有兩輛車了,現(xiàn)在準(zhǔn)備買第三輛。3. 序數(shù)詞在句中主要用作主語、賓語、表語或定語。(作主語) They found the second quickly. 他們很快就找到了第二個。(作表語) We all agreed with the second plan. 我們都同意第二個方案。 third = 3rdtwentyfifth = 25th【典例精析】1. Susan lives on the __________ floor and we are neighbors. A. four B. fourth C. fourteen D. forty 2. To many foreigners, Guangzhou has bee their __________ hometown. A. two B. second C. the second 3. To finish the task, we’ve tried three times, and after dinner we’ll try __________ time. A. the fourth B. a fourth C. fourth D. four 4. My mother bought me a sweater for my __________ birthday. A. twelfth B. twelve C. the twelfth 考點三 分?jǐn)?shù)、百分?jǐn)?shù)及小數(shù)Ⅰ. 分?jǐn)?shù)的表示法與讀法1. 分子用基數(shù)詞,分母用序數(shù)詞。先讀分子,再讀分母。如果分?jǐn)?shù)中含有1/2 有如下表達(dá)法: “基數(shù)詞 + and + a half + 名詞復(fù)數(shù)”或“基數(shù)詞 + 名詞(單數(shù)/復(fù)數(shù))+ and + a half”。 half a basket of apples 半籃蘋果 half a bottle of honey 半瓶蜂蜜Ⅱ. 百分?jǐn)?shù)的表示法 百分?jǐn)?shù)通常用“基數(shù)詞 + percent”來表示。注意: 分?jǐn)?shù)或百分?jǐn)?shù)作主語時, 謂語動詞的單復(fù)數(shù)通常由分?jǐn)?shù)或百分?jǐn)?shù)后面的名詞而定:分?jǐn)?shù)或百分?jǐn)?shù)后面的名詞為不可數(shù)名詞時,謂語動詞用單數(shù)形式;分?jǐn)?shù)或百分?jǐn)?shù)后面的名詞為可數(shù)名詞時,謂語動詞用復(fù)數(shù)形式。 One third of the students in my class are from Canada. 我們班1/3的學(xué)生來自加拿大。小數(shù)點讀作point,小數(shù)點前的數(shù)字按照普通基數(shù)詞讀,小數(shù)點后的數(shù)字需一一讀出。 is B. One third。 is 2. It’s said that __________ of the water around the world __________ polluted. A. two third。 have C. two third。 is breakfast, I usually have __________ and two pieces of bread. A. a cup of milk half B. half a cup of milk C. a half milk cup D. half a milk cup 考點四 時間表示法Ⅰ. 年份的表示法及讀法,年份直接用數(shù)字表示。1980讀作nineteen eighty “零”數(shù)字,后兩位數(shù)字都為“零”,則先讀出前兩位數(shù),然 后將后面的兩個“零”讀為 hundred。 1808讀作eighteen O eight4. 千年的一些讀法 2000讀作two thousand 2010讀作two thousand and tenⅡ. 日期的表示法及讀法 英語中的日期,可以用“月、日、年”的順序表示,即“月份 + 序數(shù)詞/基數(shù)詞 + 年份”;也可以用“日、月、年”的順序表示,即“基數(shù)詞 + 月份 + 年”。 December 25(th), 1997 讀作 December the twentyfifth nineteen ninety seven 7 May, 1983 讀作 May the seventh nineteen eighty threeⅢ. 年代的表示方法 年代用數(shù)詞的復(fù)數(shù)形式表示。 in his forties 在他四十多歲的時候Ⅳ. 時刻的讀法1. 順讀法: 小時和分鐘數(shù)依次讀。2. 倒讀法:分鐘在前,小時在后,中間加介詞to或past。 3: 25 讀作twentyfive past three 3:55讀作five to four 3. 特殊讀法:30分鐘 = half;15分鐘 = a quarter;45分鐘 = three quarters。 1996 B. three fifths。 1997 D. third fifths。 fifth B. Twelfth。 five D. Twelfth。、長及寬等的表示方法:基數(shù)詞 + 表示度量的詞 [year(s) / meter(s) / kilometer(s) / kilo(s) / + 形容詞 (long / wide / high / deep)]。 on her forty’third birthday 在她43歲生日時3.“數(shù)詞 + 單數(shù)名詞 + 形容詞”可以構(gòu)成復(fù)合形容詞,詞與詞之間需用連字符連接。 a threemonthlong vacation 3個月的假期 a threeyearold boy 一個3歲的男孩【典例精析】1. We have two ears and one mouth so that we can listen __________ we speak. A. as twice much as B. twice as much as C. as much as twice D. as much twice as 2. — How old is your daughter? — __________. We had a special party for her_____birthday yesterday. A. Nine。 ninth C. Ninth。 Sunday is the first day of a week . 星期天是一周的第一天。 He failed twice, but he tried a third time . 他失敗了兩次,但他又嘗試了一次。 She is the tallest girl of the three . 她是三個女孩中個子最高的。 This is my first trip to Hong Kong. 這是我第一次到香港旅行。 a secondhand car 一輛二手汽車6. 序數(shù)詞用作副詞時,前面不用定冠詞。7. 在一些由序數(shù)詞構(gòu)成的固定詞組中不用定冠詞?!锉硎救说牟淮_切歲數(shù),用幾十的復(fù)數(shù)形式表示,如in his thirties 在他三十幾歲的時候。hundreds / thousands / millions + of意為“數(shù)以百 / 千 / 百萬計的”,表示大量的含義,前面不用基數(shù)詞,但可用many, several等詞修飾??键c二: 序數(shù)詞【經(jīng)典習(xí)題】 ( ) 1. The      question is very hard. I can’t work it out. A. five B. fifteen C. fifth D. fifths ( ) 2. He has been to Beijing twice. And he is going there for a      time this autumn. A. three B. third C. two D. second 【考點點撥】★序數(shù)詞表示順序,前面一般要用定冠詞the,若序數(shù)詞前加不定冠詞a或an時表示“又一,再一”。 have B. One third。 have D. First third。如果分子是1時,分母用單數(shù)形式;分子大于1時,分母用復(fù)數(shù)形式??键c四: 年代與日期的表達(dá)【經(jīng)典習(xí)題】( ) 1. Most of the students in our class were born in the     . A. 1990 B. 1990th C. 1990s D. 1990s’ ( ) 2. The correct pronunciation of “12月25日” is     . A. December the twentyfifth
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