发不发烧英语怎么说

"发烧" 的英文是 "have a fever"。
"发烧" 的来源是由 "发"，意思是 "发出" 或 "发射"，加上 "烧"，意思是 "热"。结合来说，就是 "发出或散发出热量"。
一些例句：
"I have a fever. My body temperature is 38 degrees Celsius."（我发烧了，体温是38摄氏度）
"I think I have a fever. I feel hot and my head hurts." (我觉得我发烧了，感觉很热，头疼)
"I had a fever for three days and I couldn't get out of bed." (我连续发烧三天, 不能起床)