pronoun
1
BAD : I and some of my classmates publish a monthly magazine.
GOOD : Some of my classmates and I publish a monthly magazine.
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Someone and I (NOT I and someone): 'My husband and I belong to a diving club.'
2
BAD : She is one year younger than I.
GOOD : She is one year younger than I am.
GOOD : She is one year younger than me.
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In comparisons use than me/him/her/us/them (object pronouns) or than I am/he is/she is/we are/they are : 'You're stronger than him.' 'You're stronger than he is.'