夏威夷 (Xiàwēiyí) is the Chinese name for Hawaii. It is used as a proper noun to refer to the U.S. state or its islands, and functions like any other place name in Chinese sentences.
我明年夏天打算去夏威夷度假。
wǒ míngnián xiàtiān dǎsuàn qù Xiàwēiyí dùjià.
I plan to go to Hawaii for vacation next summer.
夏威夷的海滩真的很美。
Xiàwēiyí de hǎitān zhēnde hěn měi.
The beaches in Hawaii are really beautiful.
他在夏威夷住了三年。
tā zài Xiàwēiyí zhùle sān nián.
He lived in Hawaii for three years.