Is this sentence gramatically correct?
"The position they have on their corresponding situations change."
Arggg.... it sounds weird..... read this:
Usage Note:
The use of the third-person plural pronoun they to refer to a singular noun or pronoun is attested as early as 1300, and many admired writers have used they, them, themselves, and their to refer to singular nouns such as one, a person, an individual, and each. W.M. Thackeray, for example, wrote in Vanity Fair in 1848, “A person can't help their birth,” and more recent writers such as George Bernard Shaw and Anne Morrow Lindbergh have also used this construction, in sentences such as “To do a person in means to kill them,” and “When you love someone you do not love them all the time.” The practice is widespread and can be found in such mainstream publications as the Christian Science Monitor, Discover, and the Washington Post. The usage is so common in speech that it generally passes unnoticed. ·However, despite the convenience of third-person plural forms as substitutes for generic he and for structurally awkward coordinate forms like his/her, many people avoid using they to refer to a singular antecedent out of respect for the traditional grammatical rule concerning pronoun agreement. Most of the Usage Panelists reject the use of they with singular antecedents. Eighty-two percent find the sentence The typical student in the program takes about six years to complete their course work unacceptable. Thus, the writer who chooses to use they in similar contexts in writing should do so only if assured that the usage will be read as a conscious choice rather than an error. ·Interestingly, Panel members do seem to distinguish between singular nouns, such as the typical student, and pronouns that are grammatically singular but semantically plural, such as anyone and everyone. Sixty-four percent of panel members accept the sentence No one is willing to work for those wages anymore, are they? in informal speech. See Usage Note at any. See Usage Note at anyone. See Usage Note at he1. See Usage Note at she.
Ummm... *is confused*