Modal verbs

[Manas Ranjan Mallick]

I am some times in a fix when to use could in stead can. For example:
I can buy a car next year.
I could buy a car next year.
Which one is appropriate and why?
Is there a good site where I can study the application of modal verbs in greater detail?

[jamiep]

"Can" is more defnite than could.

I'm saving so that I can buy a new car next year.

If I started saving I could buy a new car next year.

[Manas Ranjan Mallick]

This means I can use can or could any where I like? Can I hear from Anglika or Tdol?

[Barb_D]

Use "could" if you have an "if" associated with it. Use "could" if there is some condition that must be satisfied.

If I save enough, I could buy a car.
I could go with you to the store, if you want me to.

"Can" does not have a condition. I can buy a car right now.

[paochai01]

Does that mean we couldn't use 'could' without conditionals?

[Barb_D]

Originally Posted by paochai01

Does that mean we couldn't use 'could' without conditionals?

You can use it if the conditional is understood.

We may need someone to work a double shift tonight.
I could do it. (Unstated: If it turns out that you do need this. or If no one else volunteers)

And of course, it's the past of "can" but you're not talking about that, right?

[paochai01]

You can use it if the conditional is understood.

We may need someone to work a double shift tonight.
I could do it. (Unstated: If it turns out that you do need this. or If no one else volunteers)

------
If the conditional is understood.
Got it!! Thanks!!