<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> The area of the present perfect has always been a hotly contested ground amongst linguists, and recent corpus studies have shown that variation in this realm in English is far more pervasive than previously assumed. This volume features theoretically informed analyses of the expression of the present perfect in native and non-native Englishes, and represents the state of the art in corpus-based works in this area.