When to use TO and For

[englishquestion]

When to use TO and For
Do we always use "To" to indiacate the place where we are going or coming from.
eg:Please correct if these sentences are wrong
1) I am going for classes or I am going to classes
2) I am going to/for my friend's wedding
3) Are you coming to Rachel's wedding?

[2010]

When to use TO and For
Do we always use "To" to indiacate the place where we are going or coming from.
eg:Please correct if these sentences are wrong
1) I am going for classes or I am going to (attend) classes
2) I am going to/for my friend's wedding (to)
3) Are you coming to Rachel's wedding? (to)

===Not a teacher===

For: use to indicate aim or the purpose.

To: denotes direction or place.

Note: The above explanation is very basic and simple one.

For further details, refer to the below link:

http://www.usingenglish.com/forum/as...er/4912-a.html