一年 英语怎么说一年，是 one year 还是 a year一年以前呢，怎么说 ?

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“一年”的英语表达为one year或a year，不过one year比较常用。
一年以前：one year ago.
one year 英[wʌn jə:] 美[wʌn jɪr]
[意思] 1年;
词组
for one year 有一年的时间
in the year one 很久以前
be in one year and out the other 当耳边风
deposits of one-year maturity 一年为期的定期存款
four seasons in one year 一年四季
lasting for one year 持续一年的
more than one year 超过一年
例句
1、The targets are irradiated for about one year.
靶核大约要辐照一年。
2、It is n't one year yet since she went to live in the countryside.
她到农村去还不满一年。
3、She is one year younger than i am; she was born in the year of the ox.
她比我小一岁，是属牛的。
4、Field animals under one year of age are generally resistant.
但一岁以下的野生动物普遍都有抵抗力。
5、His whole school education added up to no more than one year.
他所受的全部学校教育加起来不过一年。

One year  一年

a year ago  一年以前

拓展资料

1. I just basically do year-one to the present, it's was nice warm outside, that was the day he was born.

我到现在做了一年，那天户外很晴朗暖和，那天他出生了。

2. We're really looking forward to this year working together with you and all the different traditions at Princeton University.

我们很期待,在接下来的一年,能够在普林斯顿和你共事。

3. I lived with Italians and, um, my entire life was not in English, um, for a year, um, which I loved.

我和意大利人住在一起。所以，整整一年的时间，我都没有接触英语。当然，我挺喜欢这样一段经历的。

短语：一年多 more than a year ; much of the year

一年一次 once a year ; annually ; yearly ; Once in a year

以一年 centimetres a year

一年之际 First Spring ; A one-year technical and non

整整一年 Yearlong ; all the year round