Cyrus + be + noun phrase
Cyrus 为专有名词，通常不加冠词。
Cyrus was a Persian prince.
赛勒斯是一位波斯王子。
赛勒斯
赛勒斯(男子名)
Cyrus
男子名
赛勒斯(男子名)
n. Persian prince who was defeated in battle by his brother Artaxerxes II (424-401 BC)
My friend Cyrus is coming to the party tonight.
我的朋友赛勒斯今晚要来参加聚会。
用法提示：Cyrus 是人名，在句中作主语。
Cyrus enjoys reading history books about ancient Persia.
赛勒斯喜欢读关于古代波斯的史书。
用法提示：Cyrus 是专有名词，指代人名。
I met Cyrus at the library yesterday.
我昨天在图书馆遇见了赛勒斯。
用法提示：Cyrus 作动词 met 的宾语，表示人名。
Cyrus 为专有名词，通常不加冠词。
Cyrus was a Persian prince.
赛勒斯是一位波斯王子。
此被动结构常用于叙述历史事件。
Cyrus was defeated by his brother Artaxerxes II.
赛勒斯被他的兄弟阿尔塔薛西斯二世击败。
named 放在名词后，表示“名叫……的”。
I met a man named Cyrus at the conference.
我在会议上遇到了一位名叫赛勒斯的男子。
grammar · medium
易错句子In the battle, cyrus was defeated by his brother.
正确表达In the battle, Cyrus was defeated by his brother.
英语中人的姓名是专有名词，首字母必须大写。中文没有大小写概念，学习者容易忽略，因此应将“cyrus”改为“Cyrus”。
grammar · medium
易错句子The Cyrus was a Persian prince.
正确表达Cyrus was a Persian prince.
人名前不需要加定冠词the。由于中文没有冠词，学习者常会误加，直接使用“Cyrus”即可。
grammar · medium
易错句子Cyprus was a Persian prince who was defeated by his brother.
正确表达Cyrus was a Persian prince who was defeated by his brother.
Cyrus（赛勒斯）是人名，而Cyprus（塞浦路斯）是岛国名，二者拼写相近但意义不同。根据上下文，这里应使用表示人名的Cyrus。
Cyrus 是人名／波斯王子名，读作 /ˈsaɪrəs/；Cyprus 是国名，读作 /ˈsaɪprəs/。二者拼写和发音相近，但所指完全不同，不能互换。
小居鲁士（波斯王子）
Cyrus the Younger rebelled against his brother Artaxerxes II.
小居鲁士反抗其兄阿尔塔薛西斯二世。
居鲁士王子
Prince Cyrus was defeated in battle by his brother's army.
居鲁士王子在战斗中被其兄的军队击败。
居鲁士的战败
The defeat of Cyrus left his brother Artaxerxes II in power.
居鲁士的战败使他的兄长阿尔塔薛西斯二世继续掌权。
居鲁士的军队
Cyrus's army was no match for the king's forces.
居鲁士的军队不是国王军队的对手。
我是赛勒斯……你懂我的意思吗？
In the 1979 cult film The Warriors, Cyrus, the leader of the Gramercy Riffs, uses this rallying cry to unite New York's street gangs.
在1979年的邪典电影《战士帮》中，格拉梅西裂帮的首领赛勒斯用这句话号召纽约各街头帮派联合起来。
Dictionary facts from ECDICT.