這是選修7里的內(nèi)容.
事實上,這里的wounded不是過去分詞,而是一個形容詞,表示一種狀態(tài).不過形容詞也可以作原因狀語.如：
Overjoyed, he rushed out of the house.
Much interested, he agreed to give a try.
Afraid of difficulties, the girl preferred to take the easy road.
形容詞做原因狀語, 有無being區(qū)別不大：
Being poor,he couldn't afford a TV set.（現(xiàn)在分詞做原因狀語）
Poor,he couldn't afford a TV set. （形容詞做原因狀語）
Being ill, I stayed at home.（形容詞做原因狀語）
Ill, I stayed at home（形容詞做原因狀語）
憑我個人的感覺,加being比不加being語氣要強一些.
由此可見,being badly wounded的being是可以省略的.你的老師沒說對.
順便說一下,過去分詞做原因狀語時不可加being表示狀態(tài),加being表示正在進(jìn)行的動作:
Made of glass, the cup is fragile.
Caught in the rain, he got wet all over.
Lost in thought, he almost ran into the dar in front.
Being interviewed by the reporters, the manager has no time to see you.