We study transition form factors for decays of $D$ mesons. That is, we consider matrix elements of the weak left-handed quark current for the transitions $D\to P$ and $D\to V$, where $P$ and, $V$ are light pseudoscalar or vector mesons, respectively. Our motivation to perform the present study of these form factors is future calculations of nonleptonic decay amplitudes. We consider the transition form factors within a class of chiral quark models. Especially, we study how the large energy effective theory limit works for $D$-meson decays. In this paper, we extend previous work on the case $B\to \pi$ to the case $D\to P=\pi$, $K$. Further, we extend our previous model based on the large energy effective theory to the entirely new case $D\to V=\rho ,K^{*},\dots$ To determine some of the parameters in our model, we use existing data and results based on some other methods like lattice calculations, light-cone sum rules, and heavy-light chiral perturbation theory. We also obtain some new predictions for relations between form factors.

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