文具盒里的一把尺子的英语句子还有啊，桌子下的篮球的英语句子和箱子里的钢笔的英语句子，满意就加分

There is a ruler in the pencil case.

There is a ruler in the pencil box.
There is a basketball under the desk.
There is a pen in the case.

1\THe ruler that is in the pencilebox!
2\the ruler is in the pencilebox!
3\the ruler in the pencilebox!
4\there is a ruler in the pencilebox!
上面四个都对，就看你在什么语境中用了
你太笨了，你不会举一反三吗？

One rule inside the writing-case

（事先说明：您所要的答案不是一个句子，因为中心词是“尺子”，不是“文具盒里有一把尺子”。）
“a ruler in the pencil box”

A ruler that is in the pencil-box

这些都是英语短语吧?不是一个句子哦!
文具盒里的尺子：the ruler in the pencil-box
桌子下的篮球：the basketball under the desk
箱子里的钢笔：the pen in the box

一楼正确。There is a ruler in the pencil case