2019-2020学年人教版高中英语必修3课件: Unit 2 Healthy Eating Period 3 课件(1)
2019-2020学年人教版高中英语必修3课件: Unit 2 Healthy Eating Period 3 课件(1)第3页

a. should, ought to都可表示“应该”。ought to用于表示按道理应当,常指客观的义务或责任,大多数情况下可用should代替,但比should语气重。

Modal verbs

I should help her because she is in trouble. You ought to take care of the baby.