The child was hot with fever.
Kodomo wa netsu ga atta.
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
heat; fever; temperature; zeal; passion; enthusiasm; mania; craze; rage
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about