three-year-old这类词算哪个语法点同上

three-year-old这类词算哪个语法点同上 一个三岁大的孩子：a three-year old baby a three-year-old baby 到底应该是哪个呢? three-year-old 和 three years old 有什么区别 three years old 与 three-year-old 的区别 three -year-old 和 three years old有什么区别? three-year-old 与 three years old区别 three-year-old triplet 的意思 a three－year－old boy,可以说成a three years old many　thanks! At last the three-year-old boy was____(救） 中间连线的 形容词是怎么回事 如three-year--old his brother is [ ] [ ] [ ] than heA.three years olderc.three year olderD.three older yearsB.old three years The woman has a ____child A.threeThe woman has a ____childA.three-years-old Bthree-year-old C.three years-old Dthree-year'sold year这个词说三岁是“three years old”如果用year表示“三个月”应该怎么写? Her sister is ____ than her.A three years older B three year old C three years old D three years elder说明理由 an eleven year old 和 an eleven-year-old用哪个?为什么 Her father gave to her when she is three year old这个句子对吗?Her father gave a dog to her when she is three year old对吗? 选择：I am afraid the three-hour fight is ( ) for an eighty-year-old lady.I am afraid the three-hour fight is ( ) for an eighty-year-old lady.too many?too much?much too?very tired?前两个,我不知道选哪个了.. a twenty year old boy对还是a twenty years old boy对哪个等于 a twenty-year-old boy?