(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which 分别(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which （7）from whom 怎样使用 急

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(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which 分别(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which （7）from whom 怎样使用 急

(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which 分别(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which （7）from whom 怎样使用 急
(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which 分别
(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which
（7）from whom 怎样使用 急

(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which 分别(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which （7）from whom 怎样使用 急
你看他们都是定语从句先行词吧,所以which前面的介词其实都是后面从句的介词提前的.
你先把从句中缺什么成分找出来,把which所代表的主句中的词带到从句中的缺空处,你就可以根据语义理解需要什么介词使从句完整,你根本不需要知道他们跟which放在一起是什么意思.比如by：可以表示时间,方式,被动什么的

视which后的句子里的不及物动词而定

这些都要看后面的从句中的短语或者是一些固定的该用什么介词而定。
其实并不难，不要想得太复杂了。都要看句子来分析。

in有里面的意思，on是在表面。which都是定语从句的引导词

(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which 分别(1) in which (2) on which （3） at which （4）by which (5) with which (6)about which （7）from whom 怎样使用 急 in which,on which.at which,to which的区别 on which in which where 区别联系? in which on which 的区别 这几题的答案谁知到/ 1which is the biggest animal on land?2which anmal lives in water? which word on lines 1-2 means in a foreign country请翻译一下谢谢! in which ：on which：which的具体用法是啥啊? on which ,in which,for which等于什么? in which on which for which 的区别 on which by which with which in whichon which by which with which in which 都是什么意思有什么区别 in the days 还是on the days?1 The days on which black people in the country could not travel without a pass are gone forever.2 I will never forget the days in which we worked together.为什么第一个用on which 第二个用 in which on which;in which;for which;when;where的区别.on which;in which;for which;of which;which的区别! 请问on which,by which,to which,from which,in which,with which,in which,for which,of which的区 October 1 ,2005is the day ()I will forever remember in my life 1that 2when 3on which 4from which in which与on which在定语从句中的区别 in which 等于where,那on which等于where吗? where when =?in which 或 on which? in which和on which有什么区别呢?