这句是对的。
He discovered the remains of the Titanic, the "unsinkable" passenger ship having rested on the floor of the Atlantic Ocean since 1912.
因为since引导时间状语之后,主句往往用完成时。having done 是现在分词的主动形式当中的...
这句是对的。
He discovered the remains of the Titanic, the "unsinkable" passenger ship having rested on the floor of the Atlantic Ocean since 1912.
因为since引导时间状语之后,主句往往用完成时。having done 是现在分词的主动形式当中的...