"几块巧克力"用英语可以说 "a few pieces of chocolate"。
其中"a few" 意思是"几个"，"pieces" 意思是 "块"。"of chocolate" 意思是 "巧克力"。
例句：
Can I have a few pieces of chocolate? (我可以吃几块巧克力吗？)
I bought a few pieces of chocolate for my friend's birthday. (我为朋友的生日买了几块巧克力)
I only had a few pieces of chocolate left in the box. (盒子里只剩下几块巧克力了)