102 Be as perfect auxiliary

A - feature is pervasive or obligatory2
B - feature is neither pervasive nor extremely rare7
C - feature exists, but is extremely rare12
D - attested absence of feature41
X - feature is not applicable (given the structural make-up of the variety/P/C)12
? - no information on feature is available2

Feature area:
Verb phrase I: tense and aspect
Typical example:
Theyʼre not left school yet.
Example source:
Kortmann/Szmrecsanyi (2004)
Variety World Region Type Value
Id Primary text Variety Variety Type