Future perfect

FUTURE PERFECT

Exercise 23.1. Use Future Perfect or Future Perfect Continuous.
1. We (finish) this exercise by 8 o’clock. 2. We are all late. The lesson (start) by now. 3. By the end of March he (live) here for three years. 4. They will be tired when they get there. They (travel) all day. 5. She (have) lunch by the time we arrive. 6. They (build) the road by the end of the year. 7. I (spend) all my money by tomorrow.
Exercise 23. 2. Answer the questions using the prompts.
Example: Have you been waiting for two hours? (midday) By midday I’ll have been waiting for three hours.

1. 
   Have you been learning English for three years? (July)
   
2. 
   Have you been staying here for five weeks? (Monday)
   
3. 
   Have you been living here for nineteen years? (Christmas)
   
4. 
   Has she been studying in London for a year? (next June)
   
5. 
   Has he been sleeping for eight hours? (breakfast time)
   

Exercise 23. 3. Study these example situations.

1. 
   Lawrence Morrel, the writer, is trying to finish a story. He must get in this evening’s post. The post is collected at 5.30. «I’ll go on writing until I finish this» – he saying to himself. «I’ll write until 5.30, but I must finish it by then. I hope I’ll have finished it by then».
   
2. 
   My father works at one of the city hospitals. By next month he will have been working there for 40 years.
   
3. 
   I’m writing a thesis. By the end of this year I’ll have been writing it for 5 years.