2019-2020学年度外研版必修五 Module 2A job worth doingPeriod4Grammar课件(40张)
2019-2020学年度外研版必修五 Module 2A job worth doingPeriod4Grammar课件(40张)第3页

Read the sentences and discuss the questions.

a. Which tense refers to actions in the past? b. Which tense refers to an action in progress when another thing happened? c. Which tense refers to something which happened before something else?