Comparing tags for the future
so + auxiliaire + sujet = aussi
but + sujet + auxiliaire = contraire
neither + auxiliaire + sujet = non plus
negative : neither should I / but I should.
negative : neither will I / but I will
negative : neither am I / but I 'm not
negative : neither can I / but I could
negative : neither will Jane / but Judy won't
negative : neither are John and Tom / but Judy Bob and Jim aren't
negative : neither is Jane / but Judy isn't
negative : neither can Jane / but Judy could.