Difference between "a" and "da" when express modo
Both "a" and "da" can express the way of doing something. For example,

Dobbiamo imparare questa poesia a memoria.
Ieri ti sei proprio comportato da stupido.

Could any one tell me how to tell part them?

Thanks

Question

Difference between "a" and "da" when express modo
Both "a" and "da" can express the way of doing something. For example,

Dobbiamo imparare questa poesia a memoria.
Ieri ti sei proprio comportato da stupido.

Could any one tell me how to tell part them?

Thanks

Answer

I think there is no rule about it.
da = come 
da stupido = come uno stupido

the expressions with "a" are fixed expressions

Answer

very difficult question, try to read here:
http://www.italica.rai.it/principali/lingua/grammar/more/uso_prep.htm

Answers · 4