1. luck n.祝你好运Good luck。Lucky adj幸运的，your lucky day, a lucky dog, the lucky one, 我才是那个幸运的人。I am the lucky one.

2.  fortunate 幸运的〔比lucky正式〕I’m in the fortunate position of doing a job I love. Happiness, 天伦之乐Family happiness；笑口常开Happiness always. 

3. Fortune,好运good fortune这年轻的姑娘是个幸运儿。The young girl is favoured by fortune. 幸运的是it’s a good thing (that)。幸好你带了一把伞。It’s a good thing that you brought an umbrella with you.