• সঠিক বাক্যটি হচ্ছে - He acted as if he had been mad.
1) Present + as if + Past Indefinite - অর্থাৎ, as if এর পূর্বে present indefinite tense থাকলে as if এর পরে past indefinite হয় এবং be verb থাকলে সবসময় were হয়। - Ex: He acts as if he were mad. - বাক্যে as if , as though , wish এর পর to be verb আসলে তা সব সময় were হয়।
• আবার, 2) Past + as if + Past Perfect - অর্থাৎ,As if / as though এর পূর্বে Past indefinite tense থাকলে As if / as though এর পরে past perfect হয়। - Ex: He acted as if he had been mad.