1. I don't feel well. I need to call in sick today.2. I feel under the weather. Can we take a rain check on lunch?
 I don't feel well. I feel under the weather. I don't feel right.身體不舒服 = I don't feel well. = I feel under the weather.也可以說 I don't feel good，但這一句話也可以指我對某事物有不好的感覺。
In order to get into college, high school students must take subject test.