alternate

/ˈɒl.tə.neɪt/ (bre, ipa) · /ˈɑːl.tɚ.neɪt/ (ame, ipa) · /US and Canadian ˈȯl-tər-nət also ˈal-; chiefly British ȯl-ˈtər-/ (ame, mw) · /ɔːlˈtɜːnət/ (bre, ipa) · /ˈɔːltərnət/ (ame, ipa) · /ˈɒl.tə.nət/ (bre, ipa) · /ˈɑːl.tɝː.nət/ (ame, ipa)

alternate — 動詞

1. to keep switching from one thing or state to another, then back again, in a stea

1.動詞不及物C1
釋義

輪流交替

在兩種狀態或動作間反覆切換

to keep switching from one thing or state to another, then back again, in a steady, repeating pattern.

例句

Renata alternated between laughing and crying as she read her grandmother's letter.

讀著奶奶的信,瑪雅一下笑、一下哭,情緒交替。

alternate between A and B

The weather alternates between heavy rain and bright sunshine in early April.

四月初的天氣大雨和晴天交替出現。

subject is a natural phenomenon

同義詞
  • fluctuate

    stresses change in level or amount, not paired items

  • oscillate

    more formal, often for opinions or emotions

  • swing

    informal, suggests larger or sudden shifts

文法句型

alternate between A and B

alternate with

用法筆記

Most often intransitive and followed by 'between' (with two items joined by 'and') or 'with' (one item paired with another). Distinguish from sense 2, which takes a direct object and means causing the switching.

常見錯誤

The lights alternated red to green.
The lights alternated between red and green.
💡use 'between … and …', not 'from … to …', for the back-and-forth pattern.

2. to deliberately arrange two items in turns, so that each takes its place again a

2.動詞及物C1
釋義

輪番安排

刻意把兩件事交替安排出現

to deliberately arrange two items in turns, so that each takes its place again and again in a regular, repeating sequence.

例句

The chef alternates layers of pasta with cheese sauce when she builds her lasagne.

做千層麵時,主廚會把麵皮和起司醬交錯一層層疊上去。

alternate A with B for paired items

Coach Lin alternates short sprints and long jogs to keep his runners fresh.

林教練讓選手交替進行短跑和長跑,以保持體力。

alternate A and B for two activities

同義詞
  • rotate

    stresses cycling through three or more items

  • interleave

    more technical, used for layers or data

文法句型

alternate A with B

alternate A and B

用法筆記

Subject is usually a person or organisation that controls the pattern. Pairs naturally with 'with' for one item plus its partner, and with 'and' for two items treated equally.

常見錯誤

She alternates her medicine every two days.
She alternates her medicine with vitamins every two days.
💡the transitive sense needs both items, not just one.

alternate — 形容詞

alternate — 名詞