47. I haven’t been to a concert for over a year.
=> The last time
48. The last time I really enjoyed myself was your birthday party.
=> I haven’t
49. It’s nearly 20 years since my father saw his brother.
=> My father hasn’t
47. I haven’t been to a concert for over a year.
=> The last time
48. The last time I really enjoyed myself was your birthday party.
=> I haven’t
49. It’s nearly 20 years since my father saw his brother.
=> My father hasn’t
47. I haven’t been to a concert for over a year.
`→` The last time I went to a concert was over a year ago
48. The last time I really enjoyed myself was your birthday party.
`→` I haven’t really enjoyed myself since your birthday party.
49. It’s nearly 20 years since my father saw his brother.
`→` My father hasn’t seen his brother for nearly 20 years