Question

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

Answer 1

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 .