pronoun
1
BAD : Both of them have not apologized yet.
GOOD : Neither of them has apologized yet.
BAD : Both the husband and the wife aren't reliable.
GOOD : Neither the husband nor the wife is reliable.
2
BAD : Anne and John both are scientists.
GOOD : Anne and John are both scientists.
BAD : Two of the biggest firms are Apple and IBM, which both are in the computer business.
GOOD : Two of the biggest firms are Apple and IBM, which are both in the computer business.