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Can I say,

Ali saw a thief trying to steal the car parked outside the John's house. He immediately called the police. The police patro car came and arrested the thief. The owner of the car thanked Ali for saving his car.
Comments  
Vincent, good job. Only a few mistakes.

Ali saw a thief trying to steal the car parked outside the John's house. He immediately called the police. The police patrol car came and the police arrested the thief. The owner of the car thanked Ali for saving his car.

I added "the police" because obviously the CAR didn't arrest anyone.
Can I say,

(a) The owner thanked John to help him to save his car.

(b) The owner thanked John for helping him to save his car.
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Vincent Teo
Can I say,

(a) The owner thanked John to help him to save his car. No

(b) The owner thanked John for helping him to save his car. Yes, but the "to" is not necessary, and I would omit it.

Is there correct way to say,

We use "thanked someone for something" , but not "thanked someone to ..."

as like, The onwer thanked John for saving ... , but not "the owner thanked John to save his car."
Yes - we thank people FOR something, not TO something. You've got it.
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Hi Barbara

Just to confirm:

The police patrol car came and the police arrested the thief. (A patrol car is a police car. I think the word 'police' is not necessary.)
I agree it's not necessary. I was looking at thanking for and thanking to.
Hi Barbara

I understand you. When we correct a sentence with a few errors, we tend to miss out one or two other errors.
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