Can I? Could I?

Question

Hello   Why do I need to say   "I'm wondering if I CAN  replace A with B"   instead  of   "I'm wondering if I COULD  replace A with B."  Thank you very much,  Spoonfedbaby.

Jeter · Accepted Answer

Hi

Maybe you need to judge situation. if the replace is possible use "can"

if not maybe use "could".

if someone has a good idea you can follow.

Eimai_Anglos · Answer

"I'm wondering if I CAN replace A with B"
"I'm wondering if I COULD replace A with B, if ..."

"Could" implies a condition.

Katsudon · Answer

Eimai_Anglos"I'm wondering if I CAN replace A with B" "I'm wondering if I COULD replace A with B, if ..." "Could" implies a condition.

Both are conditionals, Eimai_Anglos. Using 'could' makes it a more speculative conditional. This may be easiest to grasp if we look at it when the two are used for politeness. 'could' is more polite than 'can' because it allows the speaker speculate more about the request.

The same in this situation. Imagine that "replacing A with B" could cause an explosion. The speaker might well choose 'could' in such a situation because the speaker views the chance of the 'replacing' as more remote, as more speculative. 'can' makes it more real, gives the impression that the speaker intent to actually do it is greater.

MrPedantic · Answer

That's an interesting one, SFB.

Your sentences seem to have several possible uses, depending on context:

1. I'm wondering if I CAN replace A with B.

— oblique request for an opinion about replacing A with B. "Do you think I should replace A with B?"

2. I'm wondering if I CAN replace A with B.

— oblique request for permission to replace A with B. "May I replace A with B?"

3. I'm wondering if I CAN replace A with B.

— sudden realization: 'it may be possible to replace A with B'. "What if I replace A with B?"

4. I'm wondering if I CAN replace A with B.

— sudden doubt as to own capacity to replace A with B. "Am I able to replace A with B?"

5. I'm wondering if I COULD replace A with B.

— oblique request for an opinion about replacing A with B. Slightly more doubting version of #1.

6. I'm wondering if I COULD replace A with B.

— request for permission to replace A with B; more deferential/polite than #2. "Might I replace A with B?"/"Would I be able to replace A with B?"

7. I'm wondering if I COULD replace A with B.

— sudden realization: 'it might be possible to replace A with B!'. Version of #3: "What if I were to replace A with B?"

8. I'm wondering if I COULD replace A with B.

— sudden doubt as to own capacity to replace A with B. Version of #4. "Would I be able to replace A with B?"

As Katsu says, as a rough rule of thumb, CAN gives an impression of more immediacy, whereas COULD distances the action a little.

No doubt there are other possibilities!

MrP

PS:

9. I'm wondering if I CAN replace A with B.

— doubt as to possibility of replacing A with B. "Maybe it isn't possible to replace A with B."

10. I'm wondering if I COULD replace A with B.

— doubt as to possibility of replacing A with B. "Maybe it wouldn't be possible to replace A with B."

SpoonfedBaby · Answer

Many thanks to jeter, Eimai_Anglos,katsudon and MrPedantic.

I'm wondering if I can replace word_A with word_B in the sentence.
I understand now I'm not asking a request but an opinion. That's why I chose "can" over "could."

Spoonfedbaby

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