2019-2020学年英语高中人教版必修1课件:Unit 3 Period 4
2019-2020学年英语高中人教版必修1课件:Unit 3 Period 4第2页

Lead-in

What are you doing now ? We are having a class now. “ Where are we going?”. “ When are we leaving and when are we coming back?”

in progress

in the future