1、Both women were French. adj. 作定语
2、Both the women were French. adj. 定语
3、Both of the women were French. pron.作主语
4、They were both French. pron.作主语同位语
5、They both spoke French. pron.作主语同位语。
6、I like them both. pron.作宾语同位语。
7、Both Mary and Jim were French. conj.连结并列主语，both...and...