By – At – By the time – before – In..Time – This time next..
Structure: will + have + past participial
Examples:
1- At 6 O'clock, I will have left school
2- By June 10th, we will have taken our final exam 3- By the time I get my Visa, I will have traveled abroad
4- In five years time, I will have got married
5- I will have gone to bed before 11 O'clock
6- This time next month, we will have graduated
7- When the teacher is 65, he will have retired
