Jim's insurance wants to know how long the services lasted for that were rendered to him by DR Smith in order to pay.

[tufguy]

Jim's insurance wants to know how long the services lasted for that were rendered to him by DR Smith in order to pay.

Is this sentence correct?

 

[Rover_KE]

What's the context?

 

[tufguy]

What's the context?

I would like to know in these kinds of sentences should we be using "for" or "of"?

 

[emsr2d2]

I would like to know in these kinds of sentences whether we should we be using "for" or "of" in these kinds of sentences.

That doesn't answer the question!

Who are you saying this to?
Why are you saying it?
In what real-life scenario do you need to say/write this sentence?
Is the person's name Mr D. R. Smith, or is he a doctor?

 

[Tarheel]

@tufguy I advise you to write shorter, simpler sentences. Once you have mastered that then go on to using longer ones.