大学英语语法1.Governmentreport,examinationcompositions,legaldocumentsandmostbusinesslettersarethemainsitations——formallanguageisused.AinwhichBinthatA为什么2.Themillionsofcalculationsinvolved,hadtheybeendone

Question

大学英语语法
1.Government report ,examination compositions,legal documents and most business letters are the main sitations —— formal language is used.
A in which B in that
A 为什么
2.The millions of calculations involved ,had they been done by hand ,all practical .Value ——by the time they were finished .
A had lost B would lose C would have lost D should have lost
为什么?

Answer 1

in which 相当于where,定语从句的关系代词中没有in that 说法.
首先by 加时间点是完成时的标志,再次,后一句可改为：Vavlue would have lost when they were finished.而would 则是时间状语从句中“主将从现”过去式的体现