In a study appearing laying a baseline for healthy immune system
development by examining which genes, proteins and immune cells are active
during a newborn's first seven days.
老师好,我对句子中出现的两个现在完成时的用法有些疑惑,此处情态动词would是表推测,(完成时好像不是虚拟语气的用法),为什么不能用过去式呢。Because a hundred years later a pot like that would have
gone out of fashion, and nobody would ha...
...n,Cathy Freeman and Kostyra Tszyu all having done the climb. 这里面的 having done ,现在分词完成式,是强调已经完成,那为什么不可以是done,过去分词呢?
而且 having done 是强调分词的动作先于主句谓语动作,这里面是with复合结构,是...
...till holds fast what it cherished then?”之所以希望给出逐字逐句的答案,是因为我想知道句中的“truer”一词应与其前面的哪个词,比如说是不是“my rememberance”,相连接起来理解。而“truer”之后的“it”是指“my rememberance”吗?谢谢...