请问怎样将句子合并为复合句和变成分词短语啊
问题描述：
请问怎样将句子合并为复合句和变成分词短语啊
请问怎样将以下句子合并为复合句,并将其中的一个变为分词短语:I saw him walking in the park.he was lost in thought .
答
I saw him walking in the park lost in thought.