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人教版中考英语语法专项复习 专题八 数词 课件
展开基数词主要表示具体的数量、时间、年龄等。
1.表示数量的多少There are twenty-six girls in ur class. 我们班有26个女孩。
2.表示年份和年代 表示"在某年"或"在某年代"时,通常在时间前加介词in。 "in+the+逢10的表示年份的数词+-s"表示"在……世纪……年代"。如:in the 1990s 在20世纪90年代
(1)直接表达法(即直接读出来):小时在前,分钟在后。如:7:25 seven twenty-five。
(2)间接表达法:在半小时(含半小时)之内,用"分钟数+past+钟点数",表示"几点过几分";超过半个小时,用"所差分钟数+t+下一钟点数",表示"差几分到几点"。如:
①3:15 a quarter past three
②5:40 twenty t six【注意】"几点整"一般用"钟点数+'clck"表示。
4.表示年龄①a ten-year-ld by一个十岁的男孩②at the age f fur在四岁时③when he was fur years ld当他四岁时
5.表示编号 由"名词单数+基数词"构成,此时名词和基数词的第一个字母通常都大写。如:Lessn Ten第十课
6.表示确定的数目和不定数目
(1)表示确定的数目:"具体数字+数词+名词复数" hundred,thusand,millin等词前有ne, tw, three等具体数字时,这些词的词尾不加-s,表示确定的数目,其后的名词要用复数形式。如:six hundred wrkers 600名工人
(2)表示不定数目:"数词+-s+f+名词复数" hundred,thusand,millin等词前无具体数字时,其后加-s,并与f连用,表示不定数目。如:hundreds f vlunteers成百上千的志愿者
序数词是表示顺序的词。
1.第1—第3 ne→first tw→secnd three→third
2.第4—第19 由相应的基数词加-th构成(特殊:five→fifth eight-eighth nine→ninth twelve→twelfth)
3.第20—第90之间的整十 变化规则:基数词词尾-y变为-i,再加-eth。如:twenty→twentieth eighty→eightieth
4.第21—第99之间的"第几十几" 变化规则:只将个位数变为序数词,十位数不变,中间用连字符连接。如:ninety-ne→ninety-first
1.序数词表顺序常用结构:"the+序数词+单数名词"。【注意】当序数词前有形容词性物主代词或名词所有格修饰时,其前不用冠词。如:Tm is their secnd child. 汤姆是他们的第二个孩子。
2.序数词表"再……,又……"常用结构:"a/an+序数词+单数名词"。如:I ask fr a secnd chance. 我请求再给我一次机会。
分数是由基数词和序数词相结合来表达的。
1.构成规则 分子用基数词,分母用序数词;如果分子大于1,分母要用序数词复数形式。如:①三分之一 ne third②五分之二tw fifths
2.主谓一致 谓语动词的数与分数后的名词保持一致。"分数+f+限定词+名词复数"作主语时,谓语动词应用复数形式;"分数+f+限定词+不可数名词/名词单数"作主语时,谓语动词应用第三人称单数形式。如:①Abut tw thirds f the students g t schl by bus.大约三分之二的学生乘坐公共汽车去上学。②Three fifths f the water in this area was plluted.这个地区五分之三的水被污染了。
3.quarter、half 和percent 的用法 四分之一通常用a/ne quarter来表示;四分之三通常用three quarters来表示;二分之一通常用a/ne half 来表示;百分之几通常用"基数词+percent"来表示,如:30%可以表达为"30 percent"。
1.[2023滨州中考] The number f the fans ging t this cncert is abut three ________. And ________ f them are girls.( )
A.thusand; tw thirdB.thusands; tw thirdC.thusand; tw thirdsD.thusands; tw thirds
2.—What's thirty and ten?—It's ___.
A.frtyB.fiftyC.seventyD.eighty
3.—I have been t Munt Huangshan three times. What abut yu?—I have been there three times, t. And I wuld like t visit it a ___ time.
A.threeB.thirdC.furD.furth
4.Red Star Over China(《红星照耀中国》) is s ppular that ___ f the students in ur class have finished reading it.
A.three furthB.three furthsC.third furthD.third furths
5.Lily was angry because Jerry ate ___ f her twelve apples secretly. Nw she has nly fur left.
A.a quarterB.ne thirdC.a halfD.tw thirds
Ⅱ.用括号中所给词的适当形式填空。每空限填一词。
1.[2023兰州中考] This piece f music is s beautiful that I'd like t listen t it a ________(tw) time.
2.[2023南通中考] Thugh the by has failed twice, we'd better give him a ______ (three) chance t shw his skills.
3.My aunt became a nurse in her _________(twenty) and she still lves her jb nw.
4.In ur city museum, there are many ld things frm tw __________(thusand) years ag n shw.
5.The apartment has _______(twelve) flrs and Mr. Black lives n the ________(twelve) flr with his family.
阅读下面短文,在空白处填入所给单词的正确形式,使短文通顺、意思完整。
Studies shw students can understand what they've learned better when they teach smene else. The Feynman Technique includes 1._____(fur) basic steps. 2.______ (ne), study. 3.________ (tw), teach what yu've just learned t smene with zer knwledge f the subject in simple wrds. 4._______ (three), find ut which parts yu can explain well and which parts yu can't. Then g back t the bk and try t understand the tpic nce again. 5.________ (fur), repeat the steps abve until yu can explain the tpic withut lking at the bk.
1.—This will be my ___ visit t the Sun Island. I'm really excited.—Really? I can't believe it. Yu've been in Harbin fr a year.
A.firstB.secndC.thirdD.furth
2.My grandma tld me the number "9" stands fr "lng lasting", s I chse the ___ flr t live n.
A.nineB.eightC.ninthD.eighth
3.[2023怀化中考改编] Peple plant ___ trees n Tree-Planting Day every year.
A.hundredB.hundreds fC.hundredsD.hundred f
4.[2023绥化中考改编] Abut ___ f my classmates help their parents d husewrk n weekends.
A.tw fifthsB.secnd fiveC.secnd fifthsD.tw fives
5.Grain Rain(谷雨) ften starts in April, the ___ mnth f the year.
A.thirdB.furthC.fifthD.sixth
Ⅱ.用括号中所给词的适当形式填空
1.I think the ________(seven) dancer in the line perfrmed the best.
2.Jnes tk ______(three) place in the lng jump.
3.The dam(水坝) prduces electricity fr _________(millin) f peple in China.
4.We sat in the ______(six) rw.
5.My brther is in the _______(eight) grade.
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