day打错了,应该是today才对。楼主的句子应该是;It 's 【sunny】 today.就sunny提问是:What is the weather like today?或者 How is the weather today?祝你进步!
sunny是天气晴朗的意思对sunny提问,就用“天气如何”的问句提问what's the weather like today?How is the weather today?