如何在perl regexp匹配中排除特定文本

I am using perl to parse a large report file. I pull out names by looking for last name and first name at the beginning of some lines of the report. I am trying to exclude text following the name. Some of these text fields are numbers, thus easy -- I just look for non-digit characters. But some are fixed text fields that I can list.I am using perl to parse a large report file. I