Agreement with So, Too, Either, Neither

"So" and "too" are used in positive sentences to show agreement. Positive Sentence, Too: SO + AUXILIARY + SUBJECT Examples: Person A: I love chocolate. Person B: I love chocolate, too. So do I. Person A: Sarah is a talented singer. Person B: I can sing well, too. So can I. Person A: They have visited Paris. Person B: I have been to Paris, too. So have I. "Either" and "neither" are used in negative sentences to show agreement. (NEITHER = NOT EITHER) Negative Sentence, Either: NEITHER + AUXILIARY + SUBJECT Examples: Person A: I don't love football. Person B: I don't love football, either. Neither do I. Person A: Jack can't swim. Person B: I can't swim, either. Neither can I. Person A: Hana and Jim haven't done their tasks. Person B: I haven't done my tasks, either. Neither have I. Grammar Lab