  We present a systematic study of modified gravity (MG) models containing a
single scalar field non-minimally coupled to the metric. Despite a large
parameter space, exploiting the effective field theory of dark energy (EFT of
DE) formulation and imposing simple physical constraints such as stability
conditions and (sub-)luminal propagation of perturbations, we arrive at a
number of generic predictions about the large scale structures.

Cosmology and Nongalactic Astrophysics