Using this formation you can say "Item A is this, and item B is this, too."
たけしさんはにほんじんです。 Takeshi is a Japanese person.
takeshi san wa nihon jin desu.
みちこさんもにほんじんです。 Michiko is Japanses, too.
michiko san mo nihon jin desu.
Mo must directly follow the object to which it is referring. Mo is the equivalent to the English word "too."