1
ad-lib + noun phrase
及物用法，ad-lib后直接跟即兴创作的内容。
The comedian ad-libbed a hilarious joke.
这位喜剧演员即兴编了一个搞笑的笑话。
即兴表演；即兴发挥
ad-libbing — present participle of ad-lib
先理解核心含义，再看它在真实句子里的用法。
即兴表演；即兴发挥
to perform or say something without preparation; improvise
The comedian ad-libbed a hilarious joke.
这位喜剧演员即兴编了一个搞笑的笑话。
即兴表演；无准备地表演。
perform without preparation
ad-lib
Base
原形
ad-libs
3rd person
第三人称单数
ad-libbing
-ing
现在分词
ad-libbed
Past
过去式
ad-libbed
Past participle
过去分词
He often ad-libs his speeches.
他经常即兴演讲。
She ad-libbed a funny joke at the party.
她在聚会上即兴讲了一个有趣的笑话。
They have ad-libbed the entire scene.
他们即兴表演了整个场景。
规则变化，双写b加-ed/-ing
He ad-libbed a joke when he forgot his lines.
当他忘记台词时，他即兴编了一个笑话。
The comedian is ad-libbing during his entire performance.
这位喜剧演员在整个表演中都在即兴发挥。
She often ad-libs her speeches to make them more engaging.
她经常即兴演讲，以使演讲更有吸引力。
及物用法，ad-lib后直接跟即兴创作的内容。
The comedian ad-libbed a hilarious joke.
这位喜剧演员即兴编了一个搞笑的笑话。
不及物用法，不接宾语，表示在没有准备的情况下即兴表现。
When he forgot his lines, he simply ad-libbed.
当他忘记台词时，他就即兴发挥。
Not this
He did an ad-lib during the show.
Use this
He ad-libbed during the show.
将ad-lib误用为名词宾语，而它作为动词应使用过去式形式adi-libbed。
Not this
He ad-lib a funny joke.
Use this
He ad-libbed a funny joke.
遗漏了过去式变化，adi-lib的过去式应为ad-libbed。
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可作及物或不及物动词。及物时后接宾语，如 ad-lib a speech；不及物时单独使用，如 He ad-libbed.
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from AI_FALLBACK, ECDICT, OCTANOVE, WIKTIONARY, WORDNET.