解:(1)①∵AB=AC,∠ABC=60°
∴△ABC为等边三角形,
则∠BAC=∠ACB=60°,AB=CA,
∵AD⊥BN,∠MBN=30°,
∴∠BFD=∠AFG=60°,
∵∠ABF+∠BAF=60°,
∠BAF+∠EAC=60°
∴∠EAC=∠GBA
在△GBA与△EAC中,
_____, Mo Yan is a great writer and he has won the Nobel Prize.