英语中,没有three year olds这个表达,正确书写格式是three-year-olds。
以下是three-year-olds和three-year-old的区别:
three-year-olds的词性为名词,为名词three-year-old的复数形式,意思是:三岁大的人。例如:
These are all three-year-olds. 这些都是三岁大的小孩。
three-year-old 可以是单数名词,意思是:三岁大的人。也可以是形容词,意思是:三岁大的。例如:
她是个三岁大的孩子。
She is a three-year-old. (three-year-old 为名词)
She is a three-year-old girl. (three-year-old 为形容词)