作业帮sat 的一道语法题求解
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sat 的一道语法题求解
After 1986,trading on the London Stock Exchange (has been computerized) to suchan extent that personal contact between buyers and sellers became unecerssary.括号部分错了为什么?怎么改?这类提醒的规律是什么?
After 1986,trading on the London Stock Exchange (has been computerized) to suchan extent that personal contact between buyers and sellers became unecerssary.括号部分错了为什么?怎么改?这类提醒的规律是什么?
应当改成was computerized,因为时间状语是after 1986,这是一个过去的时间状语,不能与现在进行时连用的.