他20岁,是he's twenty year old还是he's twenty years old

当然是 he's twenty years old 才对。year 是可数名词，而且已经超过1，所以要+s。

1表示“整岁”，直接用基数词或year，age，例如“他20岁”可表示为：He is twenty．He is twenty years old．He is a twenty-year-old man．He is aged twenty．He is at age twenty．He is at the age of twenty．He is twenty years of age．2表示“在某人几十多...

我来给你详细解答：1.“在他20岁那年”，翻译是：“when he was twenty years old”2.在“when he was in his twenties ”中“ twenties ”用复数是因为并不是说他就整二十岁，而是说在他二十多岁（20-29）的时候。对于年龄的表达需注意单复数，因为这直接决定翻译的准确性。以上解答希望对你...

1、How old are you?译文：你多大了？2、What is your age?译文：你几岁了？3、In which year were you born?译文：你是哪一年出生的？4、May I ask your age?译文：我可以问一下你的年龄吗？5、May I know your age?译文：我能知道你的年龄吗？

你好。她二十岁 翻译成英语是：She's twenty years old.———希望帮到你，满意请采纳。

in his twenties是固定句型，更多含有“二十几岁”的意思，换而言之从额21 到29都可以包含，所以是用众数twenties，如果指明是二十岁的话，用twenty years old会适合点，即when he was twenty years old 或when he was twenty

twenty-year-old “二十岁的”，此词组相当于一个形容词用，只能作前置定语，即只能放在被修饰的词的前面。如 He's a twenty-year-old singer.twenty years old “二十岁”，此词组只能作后置定语或表语 如 He is singer of twenty years old. (后置定语)He is twenty years old. （表语）...

这个只有in one's twenties 如果你要说在某人二十岁时 你就得说at the age of...或when sb was ...years old ^__^真心祝你学习进步，如果你对这个答案有什么疑问，请追问，另外如果你觉得我的回答对你有所帮助，请千万别忘记采纳哟！

1、表示“整岁”,直接用基数词或year,age,例如“他20岁”可表示为：He is twenty．He is twenty years old．2、表示“在某人几十多岁”,用“in one‘s ＋基数词复数形式”。例如：He is in his seventies．他七十多岁。（从70岁到79岁之间）She is in her fifties．她五十多岁。（从50...

直接陈述法使用基数词是最直接的方式，如：“I am twenty”(我二十岁)。简单明了，适用于日常交流。详细描述基数词配合"years old"或"years of age"也能表达精确年龄，例如：“I am twenty years old”(我二十岁)和“twenty years of age”(二十岁)。如果想强调具体阶段，可以使用"at the age...