It's time to + (verb)

You are letting someone know that something is required to be done at the present time.

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How much does it cost to + (verb)

 
You are simply asking how much you would need to pay to do something.

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Can I + (verb)

When ending a sentence with a question mark (?) you are asking the person or people you are talking to a question for which you would like an answer. Here you are asking permission to do a particular action.

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 Do you like

With this question you are asking someone what they prefer or enjoy.

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I have + (noun)

By using the words 'I have' you are informing someone of something you have possession of or have acquired.
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I'm

'I'm' is an abbreviation for the word 'I AM.' It is used in combination with other words to tell someone about yourself or to describe something you are doing.

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