bone up on

IPA/bˈəʊn ˌʌp ˈɒn/
IPA/bˈoʊn ˌʌp ˈɔn/

bone up on — phrasal verb

  • bone up onbase form
  • bones up on3rd person singular
  • boning up on-ing form
  • boned up onpast simple

1. to study or review a subject with focused effort, usually because you will soon

1.片語動詞及物B2
釋義

to study or review a subject with focused effort, usually because you will soon need the knowledge for something specific

例句

Lisa boned up on Italian history before her trip to Rome.

The sales team boned up on the product specs because the launch was just days away.

bone up on + topic + because + reason

同義詞
  • brush up on

    milder; implies refreshing knowledge you already have rather than learning from scratch

  • cram

    more urgent and last-minute; strongly associated with exam preparation; does not require 'on'

  • swot up on

    informal British equivalent; rarely used in American English

文法句型

bone up on + noun phrase

用法筆記

Always followed by 'on' and a noun or noun phrase naming the subject being studied. The object cannot be a person — you bone up on a topic, not on someone.

常見錯誤

❌I need to bone up my French before the trip.
✅I need to bone up on my French before the trip.
💡the preposition 'on' is required; you always bone up ON something.