Breakdown of Ce dont je suis conscient, c'est de son angoisse.
je
I
être
to be
de
of / from / any (in negative sentences) / about (concerning)
son
his/her/its (son, sa, ses)
c'est
it is, that is
ce dont
what / that which (of which)
conscient
aware / conscious
l'angoisse
the anxiety (f)
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