##  [“Whether” or “whether or not”: Do away with “or not”?](/en/quiz/whether-or-not-do-away-with-or-not-eng)

Do the words **or not** always follow the conjunction **whether**?

Here’s the rule: When the clause beginning with **whether** is an adverb clause, the clause must express two possibilities (e.g. “Whether I **go** or **stay home**, you can attend”). If only one possibility is stated, include **or not** as the second possibility:

Whether I go **or not**, you can attend.

Whether **or not** I go, you can attend.

(Tip: In this case, **whether or not** is equivalent to “regardless of whether.”)

In all other cases, **or not** is either incorrect or unnecessary and can be omitted. Now that you know the rule, you can decide when to omit the words **or not** in the sentences below.

1. Gord doesn’t know ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) he will like curry, since he has never eaten it.whether

whether or not

2. ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) you celebrate Madeleine’s birthday at a restaurant or invite her for lunch in your home, she will appreciate your kindness.whether

whether or not

3. We will leave tomorrow, ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) it rains.whether

whether or not

4. Alanna has to decide ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) she should buy Sam’s used car.whether

whether or not

5. Martin is helping with the yard work this weekend, ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) he likes it.whether

whether or not

6. Caro can’t decide ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) she should commit to downhill skiing this winter.whether

whether or not

7. ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) Vincenza can win a scholarship remains to be seen.whether

whether or not

8. Noah will join the band, ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) his parents agree.whether

whether or not