When he came staggering out of the garden, blood was running from his nose and mouth. What had been the finest house in the neighborhood came crashing down. 这两个come doing是不是都是来进行某事的意思?该怎么翻译呢?
His lacking study consciousness/awareness accounts for his failure in the exam last week. 这里的His lacking study...和 Laking study...都可以作为动名词做主语吗? 还是一定需要有his呢?
Vertebrate EPRS contains two distinct aminoacylation domains, connected by a non-catalytic linker, and first joined in a unicellular ancestor ~800 Mya.这里的connected与joined分别修饰什么,在句子是什么语法成分?