/Pronouns
B1Pronouns

So / Too / Neither / Either

1

What is it?

These words show agreement with what someone said. For POSITIVE statements, use SO or TOO: "I like pizza." → "So do I." (formal) OR "Me too." (informal). For NEGATIVE statements, use NEITHER or EITHER: "I don't like pizza." → "Neither do I." (formal) OR "Me neither/either." (informal). With SO/NEITHER, invert subject and verb: "So do I" / "Neither does he". With TOO/EITHER, normal order: "I do too" / "I don't either". Choose auxiliary verb (do, be, have, can, will) to match the original statement.

2

How to form it

SubjectPositiveNegativeQuestion
Positive: So (formal)"I like pizza." → "So do I." (inverted)not usednot applicable
Positive: Too (informal)"I like pizza." → "Me too." OR "I do too." (normal)not usednot applicable
Negative: Neither (formal)not used"I don't like pizza." → "Neither do I." (inverted)not applicable
Negative: Either (informal)not used"I don't like pizza." → "Me neither." OR "I don't either." (normal)not applicable
With "be""I am tired." → "So am I." / "Me too.""I'm not tired." → "Neither am I." / "Me neither."not applicable
With modals"I can swim." → "So can I." / "I can too.""I can't swim." → "Neither can I." / "I can't either."not applicable
  • • Positive agreement: So + auxiliary + subject (inverted) → So do I. / So am I.
  • • Positive informal: Me too. OR subject + auxiliary + too → I do too. / I am too.
  • • Negative agreement: Neither + auxiliary + subject (inverted) → Neither do I. / Neither am I.
  • • Negative informal: Me neither/either. OR subject + auxiliary + not + either → I don't either.
  • • Match auxiliary: do/does/did (simple), am/is/are/was/were (be), have/has (perfect), can/will/should (modals)
  • • So/Neither: invert → So do I. / Neither does he. (auxiliary before subject)
  • • Too/Either: normal order → I do too. / I don't either. (subject before auxiliary)
  • • Me too / Me neither: very informal, common in speech
3

When to use it

  1. 1

    Positive statement — SO + auxiliary + subject (formal)

    "I like pizza." → "So do I." / "She is happy." → "So am I." / "They can swim." → "So can I."

  2. 2

    Positive statement — ME TOO (informal)

    "I like pizza." → "Me too!" / "I'm tired." → "Me too!" (very common in speech)

  3. 3

    Positive statement — subject + auxiliary + TOO

    "I like pizza." → "I do too." / "She is happy." → "I am too." / "They can swim." → "I can too."

  4. 4

    Negative statement — NEITHER + auxiliary + subject (formal)

    "I don't like pizza." → "Neither do I." / "She isn't happy." → "Neither am I." / "They can't swim." → "Neither can I."

  5. 5

    Negative statement — ME NEITHER / ME EITHER (informal)

    "I don't like pizza." → "Me neither!" OR "Me either!" (both common in speech)

  6. 6

    Negative statement — subject + auxiliary + not + EITHER

    "I don't like pizza." → "I don't either." / "She isn't happy." → "I'm not either." / "They can't swim." → "I can't either."

  7. 7

    Match auxiliary verb with original statement

    do/does/did: "I work." → "So do I." | be: "I'm tired." → "So am I." | have: "I've been there." → "So have I." | can: "I can help." → "So can I."

4

Common mistakes

So I do. (not inverted)

So do I. (inverted)

With 'so' and 'neither', invert auxiliary and subject.

Neither I do. (not inverted)

Neither do I. (inverted)

With 'neither', invert auxiliary and subject.

I too. (missing verb)

Me too. OR I do too.

Use 'Me too' (informal) or add auxiliary verb: 'I do too'.

So am I like pizza. (wrong auxiliary)

So do I. (match auxiliary with original)

Match auxiliary verb with the original statement: 'like' needs 'do', not 'am'.

Me too! (after negative)

Me neither! OR Me either!

Use 'neither' or 'either' with negative statements, not 'too'.

5

Quick reference

  • Positive: So + aux + subject → So do I. / So am I. / So can I.
  • Positive informal: Me too! OR I do too. / I am too.
  • Negative: Neither + aux + subject → Neither do I. / Neither am I.
  • Negative informal: Me neither! / Me either! OR I don't either.
  • Invert with so/neither → So do I. / Neither does he.
  • Normal order with too/either → I do too. / I don't either.
  • Match auxiliary: do (simple), be, have (perfect), can/will (modals)
  • Very informal: Me too! / Me neither! (most common in speech)
6

Natural conversation example

Finding common interests

T

Tom

I love pizza!
L

Lisa

Me too! I eat it every week.
T

Tom

I don't like pineapple on pizza though.
L

Lisa

Me neither! That's terrible!
T

Tom

I can eat a whole pizza by myself.
L

Lisa

So can I! I'm always hungry.
T

Tom

I'm not a fan of thin crust.
L

Lisa

I'm not either. I prefer thick crust!

Practice Exercises

Complete agreement responses.

  1. 1.
    "I like pizza." → "do I."
  2. 2.
    "I like pizza." → "too."
  3. 3.
    "I don't like pizza." → "do I."
  4. 4.
    "I don't like pizza." → "Me ."
  5. 5.
    "I am tired." → "am I."
  6. 6.
    "I can swim." → "can I."
Either and NeitherAll Topics

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