I have a big problem with the word "for" Plzzzzzz help me

[Imsriram]

Whenever the word "for" comes at last I am getting confused. For example take these
sentences.

What are you asking me this for?
Whom are you buying this for?
This is not something you should be punished for.
We are just a few of the people you have set a great example for.

I can understand all these sentences. But I can't create my own sentence. Give me some easy method so that I can write my own sentence in which the word for comes at last.
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I like this very much :-)

[Beeesneees]

Hello Imsriram,

I don't know 'an easy method' but many people spend their time trying to avoid using prepositions at the end of the sentence, so if I were you I wouldn't worry about it. If you are studying for a test, then grammatically there are alternative ways of writing the examples you have provided most of which would be preferred:

What are you asking me this for? Why are you asking me this?
Whom are you buying this for? For whom are you buying this?
This is not something you should be punished for. You shouldn't be punished for this.
We are just a few of the people you have set a great example for. You have set a great example for many people, including (the few of) us.

In my opinion, you don't need to force sentences to end in 'for'. Just wait until one comes naturally.
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Cheers m' dears!