如何判断用Whether 还是 if 的方法

puccan · 发表于 2011-6-30 14:41:25

"Whether" vs "If"
Using ---- Whether and If
在SC中经常遇到是选whether还是if的问题，希望这个解释对大家有所帮助。 ^^

1). After Prepositions , we use only whether.

I haven't settled the question of whether I'll go back home.
There was a big argument about whether we should move to a new house.

2). Whether, but not if, is used before infinitives.

They can't decide whether to get married now or wait.

3). When a question-word clause is a subject or complement, whether is preferred.

Whether we can stay with my mother is another matter. - (Subject)
The question is whether the man can be trusted. - (Complement)

The question is if the man can be trusted. - Correct but less preferred.

4). If an indirect question is fronted , whether is used.

Whether I'll have time I'm not sure at the moment.

5). Whether is generally preferred in a two - part question with or.

The Directors have not decided whether they will recommend a dividend or reinvest the profits.

6). After verbs that are more common in a formal style, whether is preferred.

We discussed whether we should close the shop.

7). Whether and if both can introduce indirect questions.

I'm not sure whether / if I'll have time.

8). Yes / No questions are reported with if or whether.

I don't know if / whether I can help you.

Note - The word IF does not always signal a conditional sentence. In such cases, the GMAT prefers "whether" instead of "if"

I don't know if I will go to the dance. (Incorrect)
I don't know whether I will go to the dance. (Correct)

evelyn205205 · 发表于 2011-6-30 15:30:19

在GMAT语法中，whether是优选于if的，因为GMAT是商业英语，注重formal的形式，而if有点儿口语化，平时生活中们可以这样用的。
但在GMAT语法题中，只能用whether啊，记住吧，这是规律。

yinianch · 发表于 2013-5-21 17:15:27

谢谢啦~

doris_qin · 发表于 2014-4-11 13:54:51

解释的好详细~ 感谢~ 撒花~~~~

旺财财 · 发表于 2014-9-4 08:46:51

看过谢谢lz~~~~~
昨天看到OG13th 78
解析说道这里whether和if可以互换，但是正确选项仍然没有包含if
貌似我听到nn们说过，官方题源里面没有含if的正确的句子~~~不知道这算不算一种preference~~~

旺财财 · 发表于 2014-9-4 08:51:00

evelyn205205 发表于 2011-6-30 15:30
在GMAT语法中，whether是优选于if的，因为GMAT是商业英语，注重formal的形式，而if有点儿口语化，平时生活 ...

亲这话好像刘镇民内个什么18大定理还是公里

VC1995 · 发表于 2015-11-30 06:33:37

很好的解释~~

[SC总结] 如何判断用Whether 还是 if 的方法

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