And we can also use whereas in written or formal English.
- I am poor, whereas my brothers are very rich.
- Sugar is sweet, whereas lemons are sour.
- Martin is very tall, whereas his bother is short and fat.
- John's job is very interesting and relaxed, whereas my job is boring and stressful.
- I did't enjoy the movie, whereas my girlfriend thought it was great.
- My new car is reliable and economical, whereas my old car was unreliable and expensive to run.
- My father used to walk to work, whereas nowadays he use the car.
Note: We should always use a comma between the contrasting sentences.
Some people believe that schools are responsible for the behavior of their students, whereas others argue that discipline is the responsibility of parents.
