The question is...when i use to and for..sometimes, it seems confused to me..which of them i have to use, what's the difference between the use of TO and FOR ?
To and for


i) These flowers are for you.

ii) Please give these flowers to Mary.


i) Since it's not my fault why are you blaming me for?

ii) It's his fault so you should address your complaints to him.


i) For your comfort we have acquired a fully air-condintioned bus for this long journey.

ii) To keep you comfortable, a fully air-conditioned bus has been arranged to take you on this long journey.
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Can you give a more specific example? It will help us to understand your question better. Give us a sentence where you have trouble deciding between "to" and "for".

California Jim
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Hello CJ

I too am troubled with the use of "for" and "to". My problem is which preposition to choose for which adjective.

  1. English proficiency is necessary for/to your business success.

  2. Energy saving is important for/to the control of CO2 emission.

  3. Let's meet at two tomorrow afternoon if it's convenient for/to you.

  4. This new analyzer must be useful for/to medical doctors.

  5. This new system would be useful for/to our IT business.

  6. Those questions must be easy for/to our teachers.
Which preposition is better in the sentences above? If both are OK, is there any difference in the meaning between two usages?
This may be an American/British distinction. Here are my preferences.

1. necessary for
2. important for (but "important to (person)")
3. convenient for
4. useful to (person)
5. useful for (thing, activity)
6. easy for

Emotion: smile

Thank you, CJ. So I'll take it as the rule of thumb to choose "to" for persons and "for" for things with the exception of "easy for persons".
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are you going to ISSA
What has that got to do with this thread?