Use of If and Whether
Although both these words are often used interchangeably that is not always correct. Informal writing, IF is used when you have a conditional statement and WHETHER is used when two alternative options are available.
Use of if
"If" is used to introduce a conditional statement. When one condition needs to be complete for the other one to happen.
If you walk fast, you will reach on time.
If you study well, you will pass the test.
Use of whether
Whether is used when you have two alternatives to chose from.
Tell the peon whether you will be coming.
We will discuss whether we should leave for a road trip.
Lets do a small exercise. In the following sentences, learn the use of if and whether.
- If Neha is not comfortable, she should not wear that dress.
- Whether Neha is not comfortable, she should not wear the dress.
- I doubt whether the professor will come or not.
- I doubt if the professor will come or not.
- I don’t know whether or not Ajay will arrive by Friday.
- I don’t know if or not Ajay will arrive by Friday.
- I will come if you will accompany me.
- I will come whether you will accompany me.
- The parade will go on whether it rains or not.
- The parade will go on if it rains or not.