base on

base on — phrasal verb

  • base onbase form
  • bases on3rd person singular
  • basing on-ing form
  • based onpast simple

1. to create or develop something by using particular facts, ideas, or experiences

1.片語動詞及物B1
釋義

to create or develop something by using particular facts, ideas, or experiences as its necessary starting point

例句

Ryan based his decision to study in Japan on advice from his former teacher.

active: base + object + on + noun phrase

The film is based on a true story about a fisherman surviving alone at sea.

passive: be based on + noun phrase

同義詞
  • found

    stronger, more concrete sense of laying a physical foundation; often used for institutions and organizations

  • ground

    similar meaning but typically used for abstract things like arguments, beliefs, or opinions

  • build on

    suggests adding to an existing foundation rather than creating from scratch

文法句型

base + object + on/upon + noun phrase

be based on + noun phrase

用法筆記

Commonly used in the passive form 'be based on'. The variant 'base upon' is more formal and appears mainly in academic or literary writing.

常見錯誤

❌I base my opinion this book.
✅I base my opinion of this book on its first chapter.
💡'base on' always requires the preposition 'on' (or 'upon') after the object.
❌The theory bases on solid evidence.
✅The theory is based on solid evidence.
💡When the subject is the thing developed from the foundation, the passive form 'be based on' must be used.