-____he will jion us will not make too much difference __-A If B Whether C That D What此题正确答案是B
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![-____he will jion us will not make too much difference __-A If B Whether C That D What此题正确答案是B](/uploads/image/z/2206359-63-9.jpg?t=-____he+will+jion+us+will+not+make+too+much+difference+__-A+If+B+Whether+C+That+D+What%E6%AD%A4%E9%A2%98%E6%AD%A3%E7%A1%AE%E7%AD%94%E6%A1%88%E6%98%AFB)
-____he will jion us will not make too much difference __-A If B Whether C That D What此题正确答案是B
-____he will jion us will not make too much difference __-A If B Whether C That D What
此题正确答案是B
-____he will jion us will not make too much difference __-A If B Whether C That D What此题正确答案是B
这道题主要考察if和whether的区别
一般情况下if在表示“是否”这个意思时,与whether是可以互换通用的,但是要注意以下几种情况.
1.whether可置于句首引导主语从句,而if不能.你所列出的题目就属于这个类型
2.whether可用在介词之后,引导宾语从句,而if则不能.如:Success depends on whether we make evough effort.
3.whether可引导表语从句,if则不能.如:The puestion is whether it is not worthdoing.
4.在名词之后引导同位语从句时,用whether而不用if.如:The puestion whether the students answered correctly should be decided by the teacher.
5.whether后可接不定式,而if不能.如:Please tell us whether to go or stay here.
6.在有些动词(如discuss)之后,只能用whether,而不用if引导宾语从句.如:We discussed whether we should close the shop.
7.在引导否定概念的宾语从句时,只能用if,而不用whether.如:he asked me if I hadn't finished my work.