  The Einstein-Hilbert-type action for nonlinear supersymmetric(NLSUSY) general
relativity(GR) proposed as the fundamental action for nature is written down
explicitly in terms of the fundamental fields, the graviton and the
Nambu-Goldstone(NG) fermion(superons). For comparisons the expansion of the
action is carried out by using the affine connection formalism and the spin
connection formalism. The linearization of NLSUSY GR is considered and carried
out explicitly for the N=2 NLSUSY(Volkov-Akulov) model, which reproduce the
equivalent renormalizable theory of the gauge vector multiplet of N=2 LSUSY.
Some characteristic structures including some hidden symmetries of the
gravitational coupling of superons are manifested (in two dimensional
space-time) with some details of the calculations. SGM cosmology is discussed
briefly.
