基数词与序数词语法及练习（讲义）通用版英语六年级下册

基数词与序数词语法及练习 一，数词分类:基数词和序数词 基数词:表示数量、数目的多少 1-12 单独记；one ,two ,three ....twelve 13-19 结尾加 teen。: 13 thirteen ,14 fourteen 20-90 整数结尾加y 。 如: 30 thirty，40 forty 2.两位数，十位与个位中间加“-”。 如: 21 twenty-one， 35 thirty-five 3.三位数,在百位与十位或者个位之间用“and”。如:125 one hundredand twenty-five 序数词: 表示顺序，”第几“ 基数词变序数词变化规则: 般结尾加th ; 123，特殊记 ; 8去t,9去e ; ve要用f替 ty 变成 tie,后面再加 th; 若要遇到几十几，十位基数，个位序。 1.一般结尾加 th如: four-fourth 2.123，特殊记如: one-firsttwo-secondthree-third 3.8去t，9去e如: eight-eighth nine-ninth 如: five-fifthtwelve-twelfth 4.ve 要用f替 5.ty 变成 tie,后面再加 th如: forty-fortiethfifty-fiftieth 6.若要遇到几十几，十位基数，个位序: twenty-one - twenty-first 一，选择题 1．—______ are the sciencebook? —They are on the ______ floor. A．Where; eighth B．What; nine C．Where; five 2．There are ______ seasons in a year in China. Sunner is ______ season of the year. A．twelve; one B．fourth; the second C．four; the first 3．Twelve and ______ is thirty-one. A．Eleven B．Twenty C．twenty-one 4．One and sixteen is ______. A．eleven B．fourteen C．seventeen 5．______ is the ______ month of a year. A．February; first B．May; third C．December; twelfth 6．—What’s seven and eight? —It’s ______. A．sixteen B．fifteen C．seventeen 7．Lu Hua's birthday is on September ________. A．6st B．3rd C．4nd 8．The _______ animal is the rabbit. A．four B．forth C．fourth 9．My mother is __________ years old. A．thirty five B．thirteen C．thirty-five 10．October is the ______ month of a year. A．tenth B．eleventh C．ten 11．My _____ bike is over there. It's red. A．one B．first C．the first 12．Mother's Day is on the _______ Sunday in May. A．two B．second 13．Spring is the _________season in a year. A．first B．second C．two 14．—How many seasons are there in a year? —_____. A．Twelve B．Four C．Five 15．You have a high fever. Your temperature is ________. A．102℃ B．36℃ C．36℉ 16．There are _______ months in a year. A．twelve B．twelveth C．twelfth 17．It’s ________