three months and half 和three and a half months 有什么区别?

about three and a half months ago three months and half 和three and a half months 有什么区别? The last three months of a year are ( ),( )and ( ). Spring____(begin)in march and it____(last)for three months only two months ;fourteen days ;three hundred and中文是什么意思. first three months ________for Shanghai?Yes.And I'll come back in three months.可以用Did you leave Time passed quickly and three months went by .we knew it . Only three more months to three months later中文是什么意思 是three-month还是 three-months对 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 ________for Shanghai?Yes.And I'll come back in three months.为什么选Are you leaving呢? I love not only in the past of three months ,but now and future 啥意思?这句话对吗 Time passed quickly and three months went by .we knew it .A.after Bwhen C.till D.before l have met him three months agol met him three months ago改成I have met him three months before for three months用什么提问 three months是单数还是复数