either ... or

搭配模式: either · SLOT · or · SLOT

A correlative conjunction pattern used to connect two parallel elements (words, phrases, or clauses) and present a strict choice between them. It emphasizes that only one of the options can be true, chosen, or happen. The structure requires grammatical parallelism, meaning both parts after 'either' and 'or' should have the same grammatical form. It is commonly used in both spoken and written English to express alternatives, decisions, or mutually exclusive conditions.

• 🇨🇳表示在两个选项中二选一，通常只能有一个成立；要求两个选项在语法上保持相同的结构。

1. Neutral choice between two alternatives A2 formal

   Used to present two possible options where the speaker indicates that one of them can be chosen, without strong emotional emphasis. The options can be nouns, verbs, adjectives, or full clauses, but must be grammatically parallel.

   • You can either take the bus or walk to the station.
   • We can either meet today or postpone it until tomorrow.
   • She will either study law or choose a career in medicine.
   • You may either sit here or move to another table.
   • They are either at home or at work.
   • We could either order food or cook something ourselves.
   • He wants either coffee or tea.
   • You can either call me later or send a message.
   • We will either travel by train or go by car.
   • She is either tired or just not interested.

   🇨🇳两者之间的中性选择

2. Strong or forced choice (ultimatum) B1 informal

   Used to express a strong, sometimes emotional or authoritative choice, where one option must be chosen and the consequences of not choosing may be implied. Often used in instructions, warnings, or arguments.

   • Either you finish this now, or you will face the consequences.
   • Either tell me the truth or leave.
   • You either apologize right now or we are done talking.
   • Either you follow the rules or you leave the team.
   • You either try harder or you fail the exam.
   • Either we act immediately or we lose this opportunity.
   • Either you listen carefully or you will miss important details.
   • You either respect the decision or accept the outcome.
   • Either he changes his behavior or he gets fired.
   • Either you come with us or stay here alone.

   🇨🇳强硬或被迫的选择（最后通牒）

3. Logical deduction or uncertainty between two causes B2 formal

   Used when the speaker is unsure which of two explanations is correct and presents both as possible reasons. Often used in reasoning or speculation.

   • Either he forgot about the meeting or he never received the invitation.
   • She is either joking or completely serious.
   • They either misunderstood the instructions or ignored them.
   • The system either crashed or was shut down manually.
   • He is either very confident or unaware of the risks.
   • We either made a mistake or something unexpected happened.
   • The data is either incomplete or incorrectly processed.
   • She either didn’t hear me or chose to ignore me.
   • The results are either accurate or need to be reviewed again.
   • He either lost his keys or left them at home.

   🇨🇳逻辑推断或不确定