Д325
НЕЧЕГО И ДУМАТЬ (МЕЧТАТЬ) о чём, что (с)делать (
Invarinfin compl of бытье,
impers«и» always precedes the full verb) it is impossible (to do
sth. ),
s.o. should not even think of (doing)
sth. : об X-e нечего и думать it is not worth (even) thinking about (doing) Xit is useless (even) to think of (doing) XX is out of the questionthere's no way (in the world) that person Y can do X(in limited contexts) it is no use even to hope for X.