fifteen-year-olds看做单数还是复数?
fifteen-year-olds看做单数还是复数?
the six-year-olds是复数还是单数呀
fifteen-year-olds是什么意思?
five -year- olds像这样的泛指做主语谓语动词用单数还是复数?
fifteen-year-olds和a fifteen-year-old boy
year olds还是years old?
nothing 在反义疑问句中 是看做单数 还是复数
recent years做主语看做复数还是单数
sixteen year olds 还是sixteen year old?
英语翻译原文:A group of fifteen-year-olds at Sunshine School are h
Fifteen-year-olds shouldn't be allowed to drink.(改为同义句)____
在英语中表示时间的词是看做单数还是复数