Married by age 30 是30前结婚 还是30岁结婚

Married by age 30 是30前结婚 还是30岁结婚 整个句子是：Emily was already singing and playing piano by age two.请问by age by 28 age下 by age 15 At what age do you want to get married?why? married by the age of,at the age of的区别? by the age of 30 后面用过去完成时还是现在完成时,还是别的时态? She got married last year.可以是married 是get married with sb还是get married to sb she gets married对吗?get married主语是单数行吗 This age our sentiment by what endures Usable by age 13 yrs.and up This age 、our sentiment by what endures . in the age of by the age of at the age of的区别in the age ofby the age ofat the age of的区别 get married with/to与某人结婚到底是get married with还是get married to? Age是嘛意思 by的用法Count your age by friends,not years.Count your life by smiles,not tears.这句话是不是有错误?by smiles为什么要加s?是因by后面要跟单数吗?那 friend为什么又加s?Count your age by friends,not years.Count your life by s