Как строится презент перфект?
Jane has not known me since she was 12. Ann has never known me since 2001. Подлежащее + HAVE (HAS) + NOT (или отрицательное наречие) + 3-ья форма глагола.
+subject+have/has+verb3/Ved
-subject+haven*t/hasen*t+verb3/Ved
?(Wh+)have/has+subject+verb3/Ved
ever,never,since 2007,lately,for2years,just,yet,already,recently,so far