**Here are some examples of using the word «whether» in English:**
1. I wonder whether it will rain tomorrow.
2. I cannot decide whether to go to the cinema or stay at home.
3. We need to decide whether we want to travel by train or by plane.
4. I am not sure whether she will be able to come to the party.
5. I have to choose whether to study for the exam or go to the beach.
6. He asked me whether I had seen his keys anywhere.
7. I am wondering whether we should postpone the meeting until next week.
8. She asked me whether I wanted to join her for dinner.
9. I am not sure whether they will accept my application.
10. We need to consider whether this proposal is feasible.