1.People are doing different things now.
= People are doing different things at the moment.
2.The young people are at work.
= The young people are working (now).
3.Mr green goes to work by car.
= Mr Green drives (a car) to work.
= Mr Green goes to work in a/his car.
4.They are shopping(對shopping提問）
= What are they doing?
5.They are having dinner.
同義句= They are eating dinner/supper.
劃線提問：What are they doing?(對having dinner提問)
Who is having dinner?(對They提問)