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Anonymous Posted 11 years ago
Grammar

Have to have done and have had to do

What is the difference between:
_ by Monday you will have to have solved it
_ by Monday you will have had to solve it.

My little sister asked me and I gave her an answer but I'm not quite sure about it.
  

Top answer

Anonymous What is the difference between:_ by Monday you will have to have solved it_ by Monday you will have had to solve it. It amounts to the same thing. You have to solve it by Monday.

— CalifJim

  • Anonymous What is the difference between:_ by Monday you will have to have solved it_ by Monday you will have had to solve it.
  • It amounts to the same thing.
  • You have to solve it by Monday.
  • You can put the obligation in the present ( have to ), future ( will have to ), or future perfect ( will have had to ).
  • You can put the solution at the same time as the main verb ( to solve ) or anterior to it ( to have solved ).
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1 Answers
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AnonymousWhat is the difference between:_ by Monday you will have to have solved it_ by Monday you will have had to solve it.
It amounts to the same thing. You have to solve it by Monday.

You can put the obligation in the present (have to), future (will have to), or future perfect (will have had to).
You can put the solution
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