Questions & Answers about אני מתגעגעת לאחותי כשהיא לא בבית כמה ימים.
Because the speaker is female. In the present tense, Hebrew verbs agree with gender and number.
- אני מתגעגעת = I miss / I am missing said by a woman
- אני מתגעגע = the same thing said by a man
So this sentence tells you that the speaker is feminine.
In this sentence, אני is helpful and usually expected.
Unlike past and future tense, Hebrew present-tense verb forms do not clearly show person. מתגעגעת could mean:
- I miss
- you miss (feminine singular)
- she misses
So אני makes it clear that the meaning is I miss. Without it, the sentence would sound incomplete or ambiguous unless the context already made the subject obvious.