1. “小明和小明的朋友” is too repetitive

The child may be translating directly from:

Xiao Ming and Xiao Ming’s friends

But in Chinese, repeating 小明 twice sounds clumsy.

A better way to write it is:

小明和朋友们 or 小明和他的朋友们

This is a small change, but it makes the sentence smoother.

2. “吃东西在食堂” follows English sentence order

The child is thinking in English:

eat in the canteen

So the Chinese sentence becomes: 吃东西在食堂

But in Chinese, the place usually comes before the action: 在食堂吃……

So instead of:

小明和朋友们吃东西在食堂。

A better sentence is:

小明和朋友们在食堂吃饭。or 小明和朋友们到食堂用餐。

This is one of the most common issues for English-speaking students. They may have the correct idea, but they arrange the sentence using English order.

3. “东西” is too general for exam writing

In English, students are used to using “things” very widely.

So they may translate many ideas into 东西:

eat things → 吃东西
buy things → 买东西
take things → 拿东西
put things → 放东西
do things → 做东西

In daily conversation, some of these are acceptable. But in composition and oral, overusing 东西 makes the answer sound vague.

For exam writing, students should learn to be more specific.

Instead of 吃东西, they can write:

吃饭
用餐
吃午餐
买食物
排队买饭
坐在食堂里用餐

So the original sentence:

休息的铃声响了。小明和小明的朋友吃东西在食堂。

can become:

休息的铃声响了，小明和朋友们在食堂吃饭。

Better:

休息的铃声响了，小明和朋友们一起到食堂用餐。

Even better:

休息的铃声一响，小明便和朋友们一起到食堂排队买午餐。

This does not mean the child has no ability. It shows that the child needs guidance in sentence order, word choice, and natural Chinese expression.