  Two-dimensional electronic spectroscopy (2DES) has high spectral resolution
and is a useful tool for studying atom dynamics. In this paper, we apply the
electromagnetically induced transparency (EIT) technique to 2DES in a
three-level atom, and find out that the number of peaks (troughs) will become
more due to the introduction of EIT. Also, the height of the peaks (the depth
of troughs) will change from constant to a damped oscillation. These findings
may help us obtain more information about the dynamics of excited states.
