  We calculate the $B\to P$, $B\to V$ (P: light pseudoscalar meson, V light
vector meson) form factors in the large-recoil limit in perturbative QCD
approach, including both the vector (axial vector) and tensor operators. In
general there are two leading components $\phi_B$ and $\bar{\phi}_B$ for $B$
meson wave functions. We consider both contributions of them. Sudakov effects
($k_{\perp}$ and threshold resummation) are included to regulate the soft
end-point singularity. By choosing the hard scale as the maximum virtualities
of internal particles in the hard $b$-quark decay amplitudes, Sudakov factors
can effectively suppress the long-distance soft contribution. Hard contribution
can be dominant in these approaches.
