“I” is used when it is the subject of the sentence. Often, the subject occurs at the beginning. “I went to the store.” The subject is “I” and the action is “went to the store”. Sometimes, the subject isn’t at the beginning, and this is what throws people.
Ex: While searching through my closet yesterday, I found the diary I kept as a child.
The subject of this sentence is still “I”. I was the one searching through the closet. Then there is a little part (dependent clause), “I kept as a child” – and “I” is still the subject of that clause.
When “I” is NOT the subject of the sentence, it is perfectly correct to use “me”.
Ex: Mother sewed me a new dress.
The subject here is “mother”. She did the action, which is “sew a new dress”. “Me” is the receiver of the action – therefore, you must use “me”. The real confusion seems to happen when there is someone else in the sentence with “me”. The rule here is, whatever you would use when “I” is in the sentence alone, is what you still use even when someone else is in the sentence, too.
Ex: I went to the beach. Sara went to the beach. Sara and I went to the beach.
(Note, that it is customary to put the other person first, rather than to say, “I and Sara went to the beach.” This stems from the age of manners, when we did not always think of ourselves first.)
With this little reminder, you should never make this mistake again! You can be smarter than the speechwriters for the President.
Hanging at the Beach by P & K’s Mommy
Birthday Cake in the Garden by Romrodinka