3#三思 7 Y# e% l' N6 v 3 R" s0 o! X4 V+ A& E8 V+ w/ s# y! I, T# t2 k( D1 U
I will use the fourth tune with a slow glide downwards instead of the first tune, you can double check it from a native speaker or English dict for the [i:], it is not in a flat tune.