two years and a half 或者two and a half years想知道一下表达几年半表示说法的规律可以有几种表示法随着年数的增加有什么变化或者规律?

two years and a half=two and a half years吗? - years ago ,I came to the USA.Two and a half Two and half a Two a half Half and two two years and a half 还是two year and a halfyear后没有没有s啊? our teacher has been teaching in this school for( ) a.two year and a half b.two and a half year c.two years and a half d.two and a half years These children have been studying English for _____. A.two years and a half B.two and a half year C.two and half year D.two and half years We have stayed at this school for _____.Which of the following choices is wrongA.two and a half years B.two years and half a yearC.two years and half a year D.both A and B two years and a half 改为同义句— — — — years How long have you lived here,liease?For about________.A.two and a half year B.two and a half yearsC.two year and a half D.two years and half I’ve lived here for about _______.A. two and a half year B. two and a half yearsC. two year and a half D. two years and half选什么,为什么? Four years old at home,Two and a Half in Buses and Trains短文翻译 My parents spent two and a half years building our house要翻译 Why is the boy four years old at home but two and a half on buses? I am four years old at home,and two and a half in a bus and a train. 1：Miss Gao will stay in Nanning for about ______( )A:three months and a half B:three month and a half C:three and a half month D:three months and half2：He's been a soldier for nearly ______( )A:half and two years B:two and half yearC:two years an three years and half a year My brother has been a soldier since two years and a half.(划线提问）My brother has been a soldier （since two years and a half.这部分划线提问）） Two And A Half Men中文翻译 I,ve been a student there for nearly two and ()half years 括号里填a?为什