The speaker has the the ability to promise. The speaker is capable of promising.Originally Posted by M56
I wouldn't trust it as a promise. "I promise you'll like it." - That's sufficient.
I don't what someone is really thinking who says "I can promise you'll like it."
For one thing, no one can really promise that anyone will like anything. One would have to know someone very well. Beyond that, it sounds like a sales pitch.
M56
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