viết lại câu:there are more unemployed people in this city than in the past
=> There used to be less unemployed people in this city in the past than in the city
viết lại câu:
there are more unemployed people in this city than in the past
-> People in this city are more unemployed than in the past.
-> There are fewer employed people in this city than in the past.
-> There are more employed people in this city in the past than now.