Two boxes of chocolate can be referred to as "two boxes of chocolates" in Engpsh.
The phrase "box of chocolates" is derived from the famous pne in the 1994 movie "Forrest Gump", in which the protagonist Forrest Gump compares pfe to a box of chocolates, saying "Life is pke a box of chocolates, you never know what you're gonna get."
Here are some example sentences using "two boxes of chocolates":
I bought two boxes of chocolates for my friend's birthday.
My wife loves chocolates, so I got her two boxes for Valentine's Day.
Two boxes of chocolates make the perfect gift for any occasion.
Translations:
我为我朋友的生日买了两盒巧克力。
我妻子非常喜欢巧克力，所以我在情人节给了她两盒。
两盒巧克力是任何场合的完美礼物。