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Olivia queen
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October 4, 2014
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that vs. if and whether
- October 4, 2014, 5:26am
Whether and if can be used interchangeably when reporting yes/no questions.
eg.
The policeman asked if / whether I had seen the accident.
Use Whether only
eg.
He asked whether I wanted to go by air or by sea.
He asked whether or not I wanted to insure my luggage.
Note: Using whether is far more common. It is certainly more formal.
I think you better check it in http://www.grammar-monster.com/easily_confused/if_and_whether.htm
that vs. if and whether
Whether and if can be used interchangeably when reporting yes/no questions.
eg.
The policeman asked if / whether I had seen the accident.
Use Whether only
eg.
He asked whether I wanted to go by air or by sea.
He asked whether or not I wanted to insure my luggage.
Note: Using whether is far more common. It is certainly more formal.
I think you better check it in http://www.grammar-monster.com/easily_confused/if_and_whether.htm