back-to-back

/ˌbæk tə ˈbæk/ (bre, ipa) · /ˌbæk tə ˈbæk/ (ame, ipa) · /ˈbak-tə-ˈbak/ (ame, mw)

back-to-back — adjective

1. happening so that one thing follows the next immediately, with no other event in

1.形容詞B2
釋義

happening so that one thing follows the next immediately, with no other event in between.

例句

The team won three back-to-back championships between 2018 and 2020.

back-to-back championships

Neha had back-to-back meetings all morning and barely had time for lunch.

同義詞
  • consecutive

    more formal; used in statistics, sports records, and formal reports

  • successive

    slightly more formal; emphasises the order without the sense of tight scheduling

反義詞
  • separate

    not happening one after the other; with gaps between

  • alternating

    arranged with something else in between each item

文法句型

back-to-back + plural noun

用法筆記

This sense is almost always used attributively — directly before the noun it modifies.

常見錯誤

I studied back-to-back the whole weekend.
I studied for five hours back-to-back without a single break on Saturday.
💡'back-to-back' as an adjective must modify a noun; use it before 'hours', 'days', 'meetings' etc.
The two meetings were back-to-back each other.
The two meetings were back-to-back.
💡do not add 'each other' after 'back-to-back'; the word already expresses the sequential relationship.

2. arranged with the rear sides of two objects touching or very close, so that the

2.形容詞B2
釋義

arranged with the rear sides of two objects touching or very close, so that the front sides point away from each other.

例句

The two armchairs were placed back-to-back in the centre of the living room.

placed back-to-back

Yuna and Chen sat on back-to-back benches in the school courtyard without realising it.

同義詞
  • facing away

    informal; describes the direction the fronts point without specifying that backs touch

反義詞
  • face-to-face

    positioned with fronts pointing towards each other

  • side by side

    arranged next to each other with fronts facing the same direction

文法句型

be + back-to-back

back-to-back + noun

用法筆記

Distinguish from sense 1 (CONSECUTIVE): this sense describes physical position, not sequence. It can be used predicatively ('stood back-to-back') or attributively ('back-to-back houses').

常見錯誤

The two chairs were placed back-to-back with each other.
The two chairs were placed back-to-back.
💡do not add 'with each other'; the compound already describes the mutual arrangement.

back-to-back — noun