My mama always said, life was like a box of chocolates, you never know what you’regonnaget.
我妈妈常说，人生就像一盒各式各样的巧克力，你永远不知道下一块将会是哪种。

gonna:=going to

Gonna is used in written English to represent the words "going to" when they are pronounced informally.

释义：将要，going to非正式发音的书面形式