初中英语语法—数词-PPT

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,数词,1,定义：表示数目多少或顺序先后的词叫做数词。,数词有两种：,*,表示数目多少的数词叫做基数词，,如：,one,，,two,，,three.,，,ninetyfour,等；,*,表示顺序先后的数词叫做序数词，,如：,first,，,second,，,third.,，,fifteenth,等。,2,例句,There are five people in my family.,我家有五口人。,We live on the sixth floor in a tall building.,我们住在一座高楼的第六层。,3,基数词,(,一,),基数词的表示方法,1,基数词,1,12,是独立的词。,1 one,2 two,3 three,4 four,5 five,6 six,7 seven,8 eight,9 nine,10 ten,11 eleven,12 twelve,4,(2)13,19,都以,teen,结尾，都是双重音：,13 thirteen,14 fourteen,15 fifteen,16 sixteen,17 seventeen,18 eighteen,19 nineteen,5,2,基数词,20,90,整十位数都是以,ty,结尾。,20 twenty /,twentI/30 thirty /,tI/,40 forty /,ftI/50 fifty /,fIftI/,60 sixty /,sIkstI/70 seventy /,sevntI/,80 eighty /,eItI/90 ninety /,naIntI/,注：,13,19,的,teen/,tin/,都是重读音，而,20,90,的,ty/tI/,都是非重读音节；,/,tin/,为长音，而,/tI/,为短音。,6,3,基数词,21,99,都是由,“,几十,”,和,“,几,”,合起来构成，词中间加连字符,(,但音标里不加连字符,),，并分别重读。,21 twentyone,45 fortyfive,23 twentythree,56 fiftysix,34 thirtyfour,67 sixtyseven,7,大家应该也有点累了，稍作休息,大家有疑问的，可以询问和交流,8,4,基数词,101,999,，先说,“,几百,”,，再加,“,and”,，再加末两位数。,How many days are there in a year?,一年有多少天？,_.,三百六十五天,.,Three hundred and sixtyfive,9,5,1,000,以上的数，先从后向前数，每三位加,“,，,”,，第一个,“,，,”,前为,thousand,，第二个,“,，,”,前为,million,，第三个,“,，,”,前为,billion(,美式,),或,thousand million(,英式,),。,Can you write the number,_?,你会写数字,85,626,吗？,Yes,it is 85,626.,会写，它是,85,626,。,eightyfive thousand,，,six hundred and twentysix,10,6,百,(hundred),，千,(thousand),，百万,(million),等词与数字或,a(n),连用时，词尾不可加,“,s”,。,The computer was cheap._,那台电脑很便宜，我只花了两千元,.,I only spent two thousand,yuan,on it.,11,7,百,(hundred),，千,(thousand),，百万,(million),等词与介词,of,连用时，须用复数形式，表示不确定数目，其前不可与数字连用。,How many people went to Beijing for the Olympic Games in 2008?,有多少人去北京看,2008,年奥运会？,_,，,I think.,上百万，我认为。,Millions of,12,8,表示,“,几十,”,的数词的复数形式可用来表示人的岁数，,She is _ but she looks young.,她五十多岁，但她看上去很年轻。,in her fifties,13,在表示,“,几十年代,”,时，可以用基数词的复数形式，也可用阿拉伯数字加,“,s”,或,“,s”,。,From_ to _,，,picturestory cartoons were very popular.,从,20,世纪,50,年代到,20,世纪,70,年代，图画故事的卡通片是很受欢迎的。,the 1950s(1950s),the 1970s(1970s),14,9,基数词可与其他词构成合成形容词。,Kate is an _ girl.,凯特是个,18,岁的女孩。,注：这种合成形容词的结构为：,“,数词单数名词形容词,”,。复合形容词中，词与词之间要加连字符,“,”,。,eighteenyearold,15,10,基数词可用作主语、宾语、表语或同位语。,Give him three.(,宾语,),给他三个。,_ of the teachers in our school are women teachers.(,主语,),我们学校三分之二的老师是女老师。,Two thirds,16,11,电话号码的读法为顺次读出一个个数字，,“,0”,读作,“,o”,或,“,zero”,。数字连续重现时可用,“,double(,双,)”,。,读作,_,或,_,。,six two eight eight four four o(,或,zero)five,six two double eight double four o(,或,zero)five,17,(,二,),序数词,表示顺序的数词称为序数词。序数词一般以与之相应的基数词加词尾,th,构成；多个单词时，仅最后一个变为序数词。序数词前一般需加,“,the”,。,18,1.“,基数词,”,变,“,序数词,”,的口诀,一、二、三特殊记，结尾要用,t,d,d;,八去,t,，九去,e,，,ve,要用,f,替,，,整十数变序数，先把,y,变,为,ie,，然后再,加,th,，,若想表示几十几，只变个位就可以。,19,20,2,序数词作主语、宾语、表语、定语、同位语或状语。,She was,the,_,fifth,in the exam.(,作表语,),The,first,of June is Childrens Day.(,主语,),3,表顺序时，基数词和序数词可互换，如：,Lesson Five,_,the fifth lesson,21,(,三,),分数,1,分数的表达与读法。,Two thirds of the students are girls in our class.,在我们班，三分之二的学生是女孩。,注：分子须用基数词，分母用序数词。分子如果大于,1,，分母须用复数形式。先读分子，再读分母。分子为,one,时可换用,“,a”,。,22,2,1/2,读作,“,a(one)half”(,而不是,a second“,一秒钟,”,),；,1/4,既可读作,“,a(one)quarter”,，又可读作,“,a(one)fourth”,。,_ are written in English.,世界上,3/4,的书和报纸是用英语写的。,Three quarters of the worlds books and newspapers,23,3,较复杂的分数的读法为,“,基数词分子,over,基数词分母,”,。带分数的读法是在整数与分数之间加读,and,。,twenty-seven over two hundred and eighty-five,five and a half,six and four fifths,24,(,四,),其他数的表达,1,小数的读法：小数点前的基数词与前面所讲的基数词读法完全相同，小数点读作,“,point”,，小数点后只需将数字一一读出。,15,67,读作,_,0,009,读作,zero point zero zero nine,fifteen point six seven,25,2,百分数的读法：先读基数词，再读百分号,“,%”(,读作,percent),。,5%,读作,five percent,0,5%,读作,_,200%,读作,_,zero point five percent,two hundred percent,26,3,年代的读法为两位、两位地读。整百的后读,hundred,，整千的后读,thousand,，前常加,“,the year”,。,1937,读作,nineteen thirtyseven,或：,nineteen hundred and thirtyseven,1900,年读作,nineteen hundred,1905,年读作,nineteen and(,或,o)five,或：,nineteen hundred and five,2000,年读作,the year two thousand,27,4,表示公元后在年份前或后加,AD/,eI,di/,皆可，公元前一律在年份后加,BC/,bi,ci/,。表几十年代时，前加,the,，后加,s,或,s,。,from 200 BC to 500 AD/AD 500,从公元前,200,年到公元后,500,年,in the 1960s,或,1960s(,读作,nineteen sixties),二十世纪六十年代,28,5,年、月、日的英语顺序为,“,月，日，年,”,。,“,日,”,用序数词读和写,(,有,时也可用基数词,),；,“,日,”,读在,“,月,”,前时要加读,“,of”,。,July 7(th),，,2005,2005,年,7,月,7,日,读作：,July the seventh two thousand and five,或,the seventh of July two thousand and five,Today is Thursday,，,September 19th.,今天星期四，,9,月,19,日。,29,7,一些数学公式的读法：,“,加,”,用,plus/and,，,“,减,”,用,minus,，,“,乘,”,用,times,，,“,除,”,用,divided by,，动词多用单数，如：,3,5,8,读作：,9,2,7,读作：,65,30,读作：,84,2,读作：,Three plus/and five is eight.,Nine minus two is seven.,Five times six is thirty.,Eight divided by four is two.,30,1.Now,，,everybody,，,please turn to Page_and look at the_picture.,A,Fifth,；,five B,Five,；,fifth,C,Fifth,；,fifth D,Five,；,five,练一练,31,2.Do you have enough students to clean the laboratory?,No,I think we need _students.,A,another B,two others,C,more two D,two more,32,3.The gove