  We present theoretical predictions for a few phenomenologically interesting
distributions in the semileptonic b->u decays which are affected by Fermi
motion. The perturbative effects are incorporated at the one-loop level and
appear to be very moderate. Our treatment of Fermi motion is based directly on
QCD, being encoded in the universal distribution function F(x). The decay
distributions in the charged lepton energy, invariant mass of hadrons, hadron
energy, and q^2 are given. We note that typically about 90% of all decay events
are expected to have M_X < M_D; this feature can be exploited in determination
of |V_ub|.
