  Using 342$fb^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BABAR
detector at the SLAC PEP-II electron-positron asymmetric energy collider
operating at a center-of-mass energies near 10.58GeV, we present the
preliminary measurements of the invariant mass distributions of $\tau^{-}
\rightarrow \pi^{-}\pi^{-}\pi^{+}\nu$, $\tau^{-} \rightarrow
K^{-}\pi^{-}\pi^{+}\nu$, $\tau^{-} \rightarrow K^{-}\pi^{-}K^{+}\nu$ and
$\tau^{-} \rightarrow K^{-}K^{-}K^{+}\nu$, where events with
$K_{S}^{0}\rightarrow \pi^{-}\pi^{+}$ decays are excluded.
