This phrase shows two common grammatical misuses. This second sentence shows that the Emersons, as a whole family, own the house. The appropriate pronoun to use in its place is a singular pronoun, namely he or she . When the gender of the subject in question is unknown, traditionally, the masculine pronoun, he , is used, but it is acceptable to use the feminine pronoun, she . A user has to change her password once a month.
Users have to change their passwords once a month.
Please note the changes in the third example given above. The subject and pronoun have to be in agreement in a sentence. If you decide on the plural or singular form at the start of the sentence, you must use the same form throughout the sentence. Back to the top . Many People Is Using Poor Grammar.