alternating

/ˈɒl.tə.neɪ.tɪŋ/ (bre, ipa) · /ˈɑːl.tɚ.neɪ.t̬ɪŋ/ (ame, ipa) · /ˈȯl-tər-ˌnā-tiŋ also ˈal-/ (ame, mw)

alternating — adjective

  • alternatingpositive
  • more alternatingcomparative
  • most alternatingsuperlative

1. describes a situation where two different things or actions follow each other in

1.形容詞B1
釋義

describes a situation where two different things or actions follow each other in a regular, repeating order — for example, stripes of two colours placed one after the other, or two people taking turns doing the same task

例句

The wallpaper has alternating stripes of blue and white running across the whole room.

alternating stripes of [colour A] and [colour B]

Kwame and Oliver used alternating colours in their mural — red, then blue, then red.

同義詞
  • rotating

    stresses the idea of a scheduled shift between people or roles (rotating shifts), whereas alternating focuses on the regular one-after-the-other sequence

  • reciprocal

    more formal and implies mutual exchange or action (reciprocal visits); less commonly used for concrete patterns like stripes

反義詞
  • uniform

    describes something without variation — opposite of a pattern that changes back and forth

  • continuous

    suggests no breaks or changes, whereas alternating involves regular switching

文法句型

alternating + [plural noun] + of + [item A] and [item B]

alternating + [plural noun]

用法筆記

Frequently appears before a plural noun that names two contrasting items joined by 'and' (e.g. hot and cold, blue and white). The sense emphasises the back-and-forth structure of the sequence itself, not the timing.

常見錯誤

❌She bought alternating shoes — one red and one blue.
✅She bought shoes with alternating red and blue stripes.
💡'Alternating' describes a repeated back-and-forth across multiple elements, not a one-time difference between two items.
❌The two light bulbs are alternating, so one is on while the other is off.
✅The two light bulbs work on an alternating cycle
💡one goes on while the other turns off.' — As a predicative adjective after 'be', the meaning is unclear; use a noun like 'cycle' or 'pattern' instead.

2. describes an event that takes place once in every period of two days, two weeks,

2.形容詞B1
釋義

describes an event that takes place once in every period of two days, two weeks, or two months, following an unchanging schedule

例句

Emma works on alternating Saturdays at the hospital, so she is free every other weekend.

alternating Saturdays — day-of-week + plural

The recycling truck comes on alternating weeks — paper one collection, plastic the next.

同義詞
  • alternate

    more common in American English for the same meaning (alternate Saturdays); 'alternating' is used more in British English, though both forms are understood internationally

反義詞
  • weekly

    happening every week without skipping — opposite of every-second-week pattern

  • daily

    happening every day — no gaps between occurrences

文法句型

alternating + [time period plural]

用法筆記

Used only before time-related nouns in plural form (days, weeks, months, years, mornings, Saturdays). Common in schedules and routines. Distinguish from sense 1: this sense is about timing frequency (every second unit), not about the back-and-forth content of a sequence.

常見錯誤

❌I attend the class on alternating days, so I go on Monday and Thursday.
✅I attend the class on alternating days, so I go on Monday, Wednesday, and Friday.
💡Alternating days means day, skip, day, skip — so every second calendar day.
❌The shop is open on alternating Sundays from 10 to 6.
✅The shop is open on alternating Sundays, meaning every second Sunday.
💡When using 'alternating' this way, the idea of 'every other' is built into the word; avoid pairing it with another frequency expression.