All of the grammar books I've read say I have to use 'could' for making suggestions, but none of them say so about 'can'. My question is: Is it valid to use 'can' for making suggestions? For example:

We can take the train

Instead of We could take the train

Both sound correct (for me), the way I see it is that the variant with 'could' sound more polite than the variant with 'can'. The first variant sounds even more natural (for me again) when I add another clause:

We can take the train if you want to

Thanks :)


Yes, using "can" is a common way of making a suggestion, or implying one by giving a possible choice. It's very casual/friendly/informal.

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