alternate between A and B
between 后面接轮流出现的两种或多种事物，多用于描述状态、天气、情绪等来回变化。
The weather alternated between sunshine and rain all day.
一整天天气在晴天和雨天之间交替。
来回切换；轮换；交错删除顶点；轮流进行；使交替发生；轮流发生；交替出现
to take turns or to make things take turns; to happen or be done one after another
轮流进行；使交替发生
To perform by turns, or in succession; to cause to succeed by turns; to interchange regularly.
轮流发生；交替出现
To happen, succeed, or act by turns; to follow reciprocally in place or time; followed by with.
来回交替；在两种状态或条件之间切换
go back and forth; swing back and forth between two states or conditions
轮流变化
To vary by turns.
临时交换人员以完成某些工作和职能
exchange people temporarily to fulfill certain jobs and functions
对(多胞体或镶嵌)进行交替操作(移除交替顶点)
To perform an alternation (removal of alternate vertices) on (a polytope or tessellation); to remove vertices (from a face or edge) as part of an alternation.
一般现在时
The seasons alternate.
四季交替。
一般过去时
She alternated between hope and despair.
她在希望与绝望之间交替。
现在完成时
They have alternated shifts all week.
他们整个星期轮流值班。
动词
The weather alternates between sunny and rainy days this week.
这周的天气在晴天和雨天之间交替。
用法提示：动词alternate表示天气在两种状态之间交替出现。
She alternated studying with short breaks to stay focused.
她交替进行学习和短暂休息以保持专注。
用法提示：动词alternated描述她在学习和休息之间来回切换的动作。
We alternate shifts every two weeks at the factory.
我们在工厂每两周轮换一次班次。
用法提示：动词alternate表示轮流执行不同的班次。
between 后面接轮流出现的两种或多种事物，多用于描述状态、天气、情绪等来回变化。
The weather alternated between sunshine and rain all day.
一整天天气在晴天和雨天之间交替。
主语和 with 引出的成分轮流出现，with 后接交替的另一方。
Sunny days alternated with heavy rain that week.
那一周晴天和大雨交替出现。
及物用法，后面直接接两个被轮流安排的事物，也可说 alternate A with B。
She alternates work and rest to stay focused.
她把工作和休息交替进行，以保持专注。
grammar · medium
易错句子Sunny days alternate rainy days.
正确表达Sunny days alternate with rainy days.
alternate 表示两类事物“轮流出现、交替”时是不及物动词，后面须接介词 with，构成 alternate with sth；汉语“晴天和雨天交替”里的“和/与”不能省掉介词直接当宾语，所以要补上 with。
grammar · medium
易错句子Her mood alternates among excitement and calm.
正确表达Her mood alternates between excitement and calm.
alternate 表示“在……之间来回切换”时搭配介词 between；英语中 between 用于两者，among 用于三者或三者以上。这里只有兴奋和平静两种状态，故用 between，不能用 among。
grammar · medium
易错句子The weather is alternate between hot and cold.
正确表达The weather alternates between hot and cold.
句子需要动词作谓语：主语 The weather 是第三人称单数，一般现在时要用 alternates；be 动词后接原形 alternate 是把动词当成形容词用，句子缺少真正的谓语动词，因此应改为 alternates。
在…之间交替
She alternates between optimism and despair.
她在乐观和绝望之间交替。
与…交替出现
Rainy days alternated with dry spells.
雨天与干旱期交替出现。
每隔一天
He works on alternate days.
他每隔一天工作。
轮班
The nurses alternate shifts to cover 24-hour care.
护士们轮班以提供24小时护理。
在A和B之间来回交替
The weather has been alternating between rain and sunshine all week.
整个星期的天气都在降雨和放晴之间交替。
与...交替出现
Periods of intense work should alternate with short breaks.
高强度的工作时段应该与短暂的休息交替进行。
我们可以轮流付钱。
From Friends, Season 4, episode 17: Chandler suggests alternating who pays for dinner to be fair.
出自《老友记》第四季第17集：钱德勒建议轮流付晚餐钱以示公平。
我们轮流来。
From The Big Bang Theory, Season 5, episode 10: Sheldon proposes alternating turns in a game to avoid conflict.
出自《生活大爆炸》第五季第10集：谢尔顿提议在游戏中轮流进行以避免冲突。
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Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.