SAT语法一道Thanks to the rapid growth of the Internet,the Intern

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/09 04:51:08

SAT语法一道
Thanks to the rapid growth of the Internet,the Internet service provider (gained) three million subscribers by 1996 and,by 1996,was gaining as many as a thousand new customers each week.No error
gained错了,为什么,谁解释以下by 1996,was gaining 是怎么回事

1、括号中 gained 应改成 had gained,表示到1996年为止已经获得3百万用户,指告一段落；
2、之所以用 was gaining是因为要表达：1996年之前的一段时间在发生的事情.许多同志有这样的误解,即：by + 表示过去时间名词短语,就一定得用过去完成时,其实不然,例如：
By 1955 ,IKEA was designing all its own furniture .
到1955,“宜家”还在设计它所有的家具.
By the time he was ten,Edison was building his own laboratory .

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