A good old book I have called "English Grammar" says the following: Use the pronoun I , along with other subjective pronouns such as we, he, she, you, and they, when the pronoun is the subject of a verb Use the pronoun me , along with other objective pronouns such as us, him, her, you, and them, when the pronoun is the object of a verb: Use the pronoun me , along with other objective pronouns such as us, him, her, you, and them, when the pronoun is the object of a preposition There can be sentences, where you might not be sure of whether to use I or ME. Sometimes the easiest is to switch the two things - and then it might become a little clearer.
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