熱があるかい。

熱があるかい。

Have you any fever?

熱(ねつ)があるかい。

Netsu ga aru kai.

熱 (ねつ)

heat; fever; temperature; zeal; passion; enthusiasm; mania; craze; rage

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

かい (かい、かえ)

marks yes-no question

Readings: ネツ、あつ.い

Meanings: heat, temperature, fever, mania, passion