Some boxes are on the desk.和The boxes are on the desk.一样吗.

Some boxes are on the desk.和The boxes are on the desk.一样吗.
Some boxes are on the desk.和The boxes are on the desk.一样吗.

Some boxes are on the desk.和The boxes are on the desk.一样吗.
"Some boxes" are on the desk.泛指 桌上有些盒子
和“The boxes” are on the desk.特指 “那些"盒子在桌上
二者有区别.
）

句子都是正确的,但意思稍有区别

句式一样，但所指有所不同。前者只是简单描述有一些盒子在桌上的状态，后者“the boxes”有所特指，是谈话双方所共知的东西。