Eng Grammar (F.2)--participles

你的句子An apple being eaten by me is fresh.可以說大約沒有錯，你自己也大概知用了分詞子句來代替關係子句
但意思就怪怪的，因為你的句子是說：An apple即任何的蘋果都可以
這又怎可能：你所吃的蘋果都新鮮，所以句子應是：The apple
並且，通常我們會將being都省略，所以句子可寫成：
The apple eaten by me is fresh.

希望幫到你！
（我都用了大半個心，多個半個心，所以請不要減我分！開玩笑而已）

The sentence "The apple being eaten by me is fresh." is grammatically correct but it might not be the most appropriate answer in this case.
1. The change of "is eaten" to "being eaten".
2. There is no relative clause in the sentence.

I suppose the expected answer is
The apple which is eaten by me is fresh.

An apple being eaten by me is fresh.------ 正確
但如果是
The apple being eaten by me is fresh.------ 更正確
因為指明 (出 ) 我現在所吃的一個蘋果是新鮮
being eaten by me -----這片語 ( adjective phrase )是 形容 那 蘋果的情形

錯..!

A fresh apple is eaten by me.