15.4.7 exercise7: entro / in / tra-fra

The difference between entro / in / tra-fra is a little bit tricky. The table above is a summary.

1) Entro corresponds to the English preposition until. In this case it refers to an instant of time. (Deve farlo entro domani / He must do it until tomorrow). It can be used as well as the english preposition in (Deve farlo entro una settimana / He must do it in one week). But in both cases the meaning is that it must done before, before tomorrow and in less than week.
  2)
In case of a period of time entro can be substituted by in.
Lo faccio in una settimana.
Lo faccio entro una settimana.
I do it in one week. / I do it before a week is over.
In relationship to an instant of time entro can only be substituted by fino.
Lo faccio entro lunedì.
Lo faccio fino a lunedì.
I do it until monday.
  3)
The problem is the English preposition in because it is ambiguous.
I do it in one week.
=> I do it before a week is over.
=> I do it after a week is over.
The Italian in is not ambiguous.
Lo faccio in una settimana.
I do it before one week is over.
The Italian preposition in can therefore only be translated with the English preposition in if the event / actions happens before the period of time is over.
  4)
If the event is going to happen after the period of time is over the preposition tra / fra has to be used.
Lo faccio tra una settimana.
Lo faccio fra una settimana.
I do it after one week is over.

Select the right options, sometimes there are several correct options.

exercise 7: select the right options     ?   ?   ?  
  Non è un lavoro difficile,
lo posso fare X una settimana.		   tra / fra in entro
  This is not a complicated task, I can do that in one week.
  Te lo posso dire quando l' avrò chiesto, ossia X una settimana, quando sarà di ritorno.   tra / fra in entro
 

I can tell that to you after having asked him, in other words
in one week, when he is back.

  X lunedì 17 dicembre deve essere versata la seconda rata dell'imposta comunale sugli immobili dovuta per il 2007.   Tra / Fra In Entro
  Die zweite Rate der kommunalen Steuer auf Immobilien für
das Jahr 2007 muss bis zum 17. Dezember überwiesen werden.
  Una settimana è troppo breve,
non si può fare niente X una settimana. 		  tra / fra in entro
  One week is to short, you can' t do anything in one week.
 






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