five -year- olds像这样的泛指做主语谓语动词用单数还是复数?哎,到底是复数还是单数啊,纠结中

five-six-year olds是什么意思与five six-year olds的区别是什么 five -year- olds像这样的泛指做主语谓语动词用单数还是复数?哎,到底是复数还是单数啊,纠结中 什么情况下用five-year-olds? 请问怎么用比如：ten year old 我见过有些选择题是这样的 Ten--years--old Ten--years--olds Ten--year--olds Ten--year--old Ten years old Ten years olds Ten year olds Ten year old我见过有些英语是这样的,请问这个 Ten year o 为什么six-year-olds 是正确的 may is six-year-olds这样说对吗? six-year-old与six-year-olds的区别 15-year-old与15-year-olds的区别 year-olds与year-old的区别16-year-olds与16-year-old有什么区别吗? fifteen-year-olds是什么意思? seven-year-olds Twelve-Year-Olds翻译 英语翻译Teaching histroy to five-year-olds in a meaningful way can be very difficult. They were children.Four and five-year-olds,为什么old加s sisteen-year-olds的后面为什么要加s 16-year-olds 与the+形容词的区别 16-years-old和16-year-olds的区别 Craig创办的 the twelve twelve-year-olds怎么翻译