1. There is a toy near the box.

2. There is a toy by the box.
3. There is a toy beside the box.
4. There is a toy next to the box.
5. There is a toy at the box.
[Are they all the same in meaning? Can we use #5? Is #5 the same as the others?Do you have similar expressions?]

All are fine, and they mean approximately the same thing. I wouldn't use #5 unless that was a BiG box!

1. "There is a toy near the box." - This means that the toy is in close proximity to the box, but it does not specify a specific location.

2. "There is a toy by the box." - This also means the toy is in close proximity to the box, suggesting that the toy is located on one side or nearby the box.

3. "There is a toy beside the box." - This implies that the toy is positioned right next to the box, indicating a close proximity and a specific location.

4. "There is a toy next to the box." - Similar to the previous example, this means the toy is positioned right beside the box, clearly indicating a close proximity and specific location.

5. "There is a toy at the box." - This phrase is not used commonly in English. While it could possibly be understood, it does not convey the same meaning as the previous examples. It may give the impression that the toy is physically on top of the box itself, rather than being close by or beside it.

In summary, sentences 1, 2, 3, and 4 can be considered similar in meaning, indicating that the toy and the box are close to each other. However, sentence 5 differs and is not commonly used. Instead, you can use alternatives like "near," "by," "beside," or "next to" to express the intended meaning.