Present Simple
Parents work.
Do parents work? Общий
What do parents do? Специальный
Who works? Вопрос к подлежащему
Parents work,don’t they? Разделительный
Present Continuous
Parents are working.
Are parents working? Общий
What are parents doing? Специальный
Who is working? Вопрос к подлежащему
Parents are working,aren’t they? Разделительный
Present Perfect
Parents have worked.
Have parents worked?Общий
What have parents done? Специальный
Who has worked?Вопрос к подлежащему
Parents have worked,haven’t they? Разделительный
Present Perfect Continuous
Parents have been working.
Have parents been working?Общий
What have parents been doing?Специальный
Who has been working? Вопрос к подлежащему
Parents have been working,haven’t they? Разделительный