Guess what! I won a free ticket!

你猜怎么着！我赢了一张免费票！

I could use a free ticket!

我愿意得到一张免费机票。

Because I got two free ticket.

我免费弄到两张票。

I was enough to get a free ticket.

我的运气好到得到了一张免费票。

I was given a free ticket.

别人给我一张免费票。