This is the 7th most frequent Hebrew word.
אני
"I" or "I am"
Here, 'אני' represents the speaker's personal expression of hope.
אני מקווה שתהיה לנו שמש מחר.
I hope we have sunshine tomorrow.
In this sentence, 'אני' serves as the subject pronoun to describe the speaker's action.
היום אני הולך לטייל בפארק.
Today I am going for a walk in the park.
Here, 'אני' is used as the subject pronoun for the speaker mentioning a preference.