because

because — conjunction

1. joins two parts of a sentence to show that the second part tells you why the fir

1.連接詞A1
釋義

joins two parts of a sentence to show that the second part tells you why the first part happens or is true.

例句

Mia stayed home from school because she had a sore throat.

main clause + because + clause stating the cause

We took the train because the roads were closed by heavy snow.

同義詞
  • since

    more formal; usually when the reason is already known to the listener

  • as

    more formal and slightly weaker; common in writing, less in speech

  • for

    literary or formal; introduces a reason added as an afterthought

文法句型

main clause + because + clause

Because + clause, main clause

用法筆記

Distinguish from sense preposition/1: the conjunction is followed by a full clause with its own subject and verb (because + S + V), while the preposition pattern uses 'because of' + noun phrase. In writing, avoid starting a stand-alone sentence with 'Because' followed by only a fragment.

常見錯誤

❌Because the bus was late.' (sentence fragment)
✅Because the bus was late, I missed my class.
💡'because' must connect two clauses, not stand alone.
❌I was tired because of I worked late.
✅I was tired because I worked late.
💡use 'because' before a clause, 'because of' before a noun phrase.

because — preposition