1) Birthday
Birthday in the West, as in China, are considered occasions for congratulations and sometimes for gifts from near friends.
2)The Wedding
If one receives an announcement of a wedding after it is over, a note of congratulation may be sent, but a gift is not necessary.
3) The Funeral
Funerals, of course, are always sand, but the tendency in Western countries is against making any show of one's feelings at the funeral. The idea behind this is that the person dead would wish this last meeting of his friends in his honor and remembrance to be full of tender, happy recollections of his life.