by which time during which time since when from where的详细用法、以及和其他相似的词组区分

by which time during which time since when from where的详细用法、以及和其他相似的词组区分 关于by which和by which time请详细分析一下这两个非限制性定语从句引导词,何时使用哪一种?并烦请配上例句说明.(用during which和during which time也可以) by which time ,in which time 区别 Mark was a student at this university from 1999 to 2003,____ ,he studied very hard and was made Chairman of the Students' Union.A.during which time B.for which time C.during whose time D.by that time Don't call between 12 o'clock and 1 o'clock,____I am usually having lunch.A.at which B.during which time C.by which time D.by which 英语翻译Instruction time or 1_time.The time during which the next instruction is fetched from main memory and interpreted by the processor's instruction control unit. He came back late,( )all the guests had already left.A after which time B by which time C at when D during that time 我刚才网上收了一下,有很多答案,选哪个,和为什么? 高中英语教师网during time 与during which time 用法一样吗? during which 和during which time 的区别①They stayed with me for two weeks,____they drank all the beer I had.A.for which B.which time C.during which time D.during which选 C 关于by which和by which time,怎么用? 关于by which和by which time,怎么用? John came back late,___________ which time all the guests had already left.(A)after(B)by(C)at(D)during选什么啊. 问道定语从句的题目Mark was a student at this university from 1999 to 2003, __________ he studied very hard and was made Chairman of the Students’ Union. A. during which time B. for which time C. during whose time D. by that time 请教一个英语选择题（抄袭,灌水勿入,Mark was a student at this university from 1999 to 2003,_____ he studied very hard and was made chairman of the Students’ Union.A.during which time B.for which time C.during whose time D.by that tim the fire lasted for 20 days,(during that time)the whole forest was destroyed.为什么不能填during which time They stayed with me three weeks,______ they drank all the wine I had.A.which B.which time C.during which time D.during that you can come to see me from one to two o'clock,___ I will stay at home,A,during the time B,during that time C,during which time D,during which为什么D不对呢? Mark was a student from 1999 to 2003,during which time he studied very hard此定语从句中的during which time 能不能换成during which.为什还要加个time