Dim sWord as String, sProperWord as StringsWord = "mIxEd CaSe"sProperWord = UCase$(Left$(sWord,1))sProperWord = sProperWord & LCase(Mid$(sWord,2))函数后面加$表示什么意思? UCase LCase里的第二个参数表什么意思?我该在哪调试, immediate window吗?