分词做状语时 逻辑主语必须和主句的主语一致,如果不一致,就用独立主格结构。即在分词前加上它的逻辑主语。
(1) Not receiving any letter from him,I gave him a call.
As I didn't receive any letter from him,I gave him a call
(2) Given more attention, the trees have grown better.
If more attention was given,the trees have grown better.
我没看出上面的句子需要变独立主格结构啊。(1)的逻辑主语好像和后面一样啊。(2)中的第二个句子它加逻辑主语了吗? 望好心人士解释详细些。谢谢!