The preposition to has many uses.
To can mean towards or in the direction of.
- We went to the market.
- Let’s walk to the station.
- The apple fell to the ground.
To can also mean ‘towards a condition, quality’ etc.
- The boy went to sleep.
The preposition to is used to introduce the indirect object in structures where the direct object comes before the indirect object.
- Give it to her.
- I wrote a letter to him.
To can also mean ‘towards the end of a time’ or ‘the end of a period of time’ etc.
- ‘Can you tell me the time?’ ‘Yes, it is a quarter to two.’
- We stayed to the end of the play.
To can be used to indicate a comparison.
- I prefer walking to driving.
- They won by four goals to two.
The preposition for can be used to indicate destination or progress.
- I caught the last train for London.
- They are sailing for home.
- The time is getting on for six o’clock. (= The time is advancing towards six o’clock.)
For can be used with too. This structure has a similar meaning to too…to…
- She is too good for such a man. (= She is too good to be his wife.)
For can also be used with enough.
- This soil is good enough for growing cotton.
For can also mean in view of.
- That is good work for a beginner. (= That is good work in view of the fact that it was done by a beginner.)
- He is healthy for his age.