英语笔记
英语问答：whereby 在句中起什么作用？
嘉中
问: whereby 在下面的句子起什么作用，它是什么词性？
Thedealershipisstartingapromotionalcampaign,wherebyitistryingtopusha
two-yearextendedwarrantytoitspastcustomers.
经销店正在启动一个推销计划，试图凭此向其老客户推销两年的延保。
答： whereby 是副词，意思是：由此，从而；借以 (by which way ormethod; by
means of which)。
whereby主要有两个用法：
1）用于引导定语从句 whereby 是关系副词，相当于 by which 或 by means of which,
在定语从句中方式状语。
例如：
There was no other waywhereby they could be saved. （= by which they could
be saved.
当时没有他们可以藉此获救的其他方法。
The two colleges have a reciprocal arrangementwherebystudents from one college
can attend classes at the other.
这两个学院有互惠的安排，藉此其中一个学院的学生可以到另一个学院上课。
More examples
He eventually has a premier army career whereby he was later elected prime
Minister.
他在军队中担任要职，藉此后来当选为总理。
The courts there approved a pooling agreement,wherebythe assets would be
distributed rateably.
那里的法院批准了一项联营协议，根据该协议，资产将按比例分配。
They"ve set up aplanwhereby you canspreadthecostover a two-yearperiod.
他们已经制订了这样一个计划，允许在一段时间内分期付款。 （Cambridge）
We need todevisesomesortofsystemwherebypeoplecanliaisewith each other.
我们需要设计一套办法，人们能够借以互相保持联络。 （Cambridge）
They voted to accept a deal whereby the union will receive nearly three-quarters of
a million pounds from the International Miners Organization. (Collins)
他们投票决定接受一项协议，根据该协议工会将从国际矿工组织获得近75万英镑。
They also have plans to raise the income thresholdswherebyparents can still
qualify for the benefit.
他们还计划提高收入门槛，这样父母仍有资格享受福利。
2）用于特殊疑问句。 whereby 是疑问副词， 相当于 by what 或 by what method.
Whereby shall we know her? （By what shall we know her?）
我们靠什么认出她呢？
Wherebywill he do it ? （By what means will he do it？）
他将要如何做？
Wherebyshall we find fault with him? (By what shall we find fault with him?)
我们凭什么去找他的岔？
Wherebydoesherecognizeme?
他凭什么认出我来?
Whereby did you expect to profit?
你们是指望靠什么获利的？