Conditionals

[Tvita]

Could you please tell me the difference from grammar point of view between these 2 sentences? Also could you please explain to me the difference in meanings of these sentences?

1) If you could send the bag to me by courier service I would be most grateful.

2) If you sent the bag to me by courier service I would be most grateful.

P.S. If there are some grammar mistakes in my questions - could you please also correct them?

 

[cclaff]

Could you please tell me the difference from grammar point of view between these 2 sentences? Also could you please explain to me the difference in meanings of these sentences?

1) If you could send the bag to me by courier service I would be most grateful.

2) If you sent the bag to me by courier service I would be most grateful.

P.S. If there are some grammar mistakes in my questions - could you please also correct them?

Even native English speakers are a little ambiguous about this in everyday speech. Could send, would send, will send, or just send would fit nicely here. But "sent" is a little off the mark, implying that it has already been done.
Also a little ambiguous is the "would be" - you could also say "will be."

 

[susiedqq]

I think the "could" in this sentence has this meaning:

1) If you could (be so kind to, or are able to) send the bag to me by courier service I would be most grateful.

2) If you sent the bag to me by courier service I would be most grateful.