Cover of the textbook Outcomes Upper-Intermediate - Student's Book

The key answer of exercise 8

The key to exercise solutions in chapter 5 - A bit extreme for the textbook Outcomes Upper-Intermediate - Student's Book with authors Hugh Dellar and Andrew Walkley from National Geographic Learning

Question

Look at these sentences from the unit. Then work in pairs to answer the questions below.

Answer

1

  • b, e and f are present perfect continuous – the form is have / has + been + -ing.
  • a, c and d are present perfect simple – the form is have / has + past participle.

2

  • a and c show something finished before now.
  • b, d, e and f show something that is possibly unfinished.
  • Note that d – even though it’s present perfect simple – is still unfinished / continuing.