Word

first-class

adjective

一流的；最好的；顶级的

very good; of the highest quality

非常好；最高质量的；最好的；第一流的；优秀的

In use

The hotel offered first-class service during our entire stay.

这家酒店在我们整个住宿期间提供了一流的服务。

The quality of the handmade table is first-class.

这张手工桌子的质量是一流的。

She prepared a first-class meal for her guests using fresh ingredients.

她用新鲜食材为客人准备了一顿一流的饭菜。

a first-class mind

一流的头脑。

用作定语，修饰名词，表示品质最高。

They offer first-class service.

他们提供一流的服务。

用作表语，位于系动词后，描述主语品质。

This hotel is first-class.

这家酒店是一流的。

This is a first class seat.This is a first-class seat.

当‘first-class’用作形容词时，必须保留连字符，否则会变成名词短语‘first class’（头等舱），导致语法混淆。

I bought a first-class for the trip.I bought a first-class ticket for the trip.

‘first-class’是形容词，不能单独作名词；后面需要接被修饰的名词（如ticket, seat等）。

first-rate: 第一流的，极好的 · first-class多用于正式分类或评级，如first-class ticket；first-rate更常用于一般评价，如first-rate performance。

Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。

Dictionary facts from DICTIONARY_API_DEV, ECDICT.