Is it correct to say "what can I offer you" in an affirmative form using such an order of words, or is it correct only "what I can offer you"? I mean in sense "I can offer you something". Google translates the first way, but this is incorrect according to the basic rules of grammar.
Here are the possibilities. Your choice depends on how you use these words in a sentence. Statement: I can offer you something.
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Here are the possibilities. Your choice depends on how you use these words in a sentence.
Statement: I can offer you something.
Question: What can I offer you?
Embedded clause: Let me tell you what I can offer you.
I don't know of any other ways those words might be ordered and be correct.
CJ
"What can I offer you?" This is a direct question.
what I can offer you This is not a question. It is a subordinate clause that has to be part of a larger sentence.
eg What I can offer you is coffee.
eg I don't know what I can offer you.