dollar

dollar — noun

1. the main unit of money that people use in countries such as the United States, C

1.名詞A1
釋義

the main unit of money that people use in countries such as the United States, Canada, and Australia, with one dollar equal to one hundred cents

例句

Saira paid forty dollars for her train ticket to Toronto.

number + dollars — price pattern

Liam saved nearly two hundred dollars by buying his laptop during a sale.

同義詞
  • buck

    informal; used mainly in speech for US, Canadian, or Australian dollars

  • currency

    much broader term covering any country's money

文法句型

number + dollar(s)

用法筆記

Always specify which country's dollar you mean (e.g. US dollars, Canadian dollars, Australian dollars) when the context does not make it obvious.

常見錯誤

❌Dollar is the money of America.
✅The dollar is the currency used in the United States, Canada, Australia, and several other countries.
💡Many nations use a dollar as their currency, so name the country when needed.
❌I need to buy some dollars before my trip to Tokyo.
✅I need to buy some US dollars before my trip to Tokyo.
💡Japan uses the yen, not dollars; specify which foreign currency you mean.

2. the value that the US dollar has when compared with foreign currencies, especial

2.名詞B1
釋義

the value that the US dollar has when compared with foreign currencies, especially in discussions about exchange rates, trade, and international markets

例句

The dollar has grown stronger against the Japanese yen this year.

the dollar + verb + against + [currency] — exchange-rate pattern

Travelers watch the dollar rate closely before exchanging their money abroad.

同義詞
  • greenback

    informal term for the US dollar, originating from the green colour of American paper money

  • US currency

    more formal and broader; includes coins as well as the exchange value

文法句型

the dollar + verb + against + currency

the dollar + comparative adjective

用法筆記

Frequently modified by adjectives describing strength or direction: a strong/weak dollar, a falling/rising dollar. The subject of the sentence is almost always the dollar, treated as a singular economic force.

常見錯誤

❌The Canadian dollar fell against the euro, so my trip to Paris became more expensive.' (if you mean the US dollar)
✅The US dollar fell against the euro, so my trip to Paris became more expensive.
💡Sense 2 refers specifically to the US dollar's exchange value; name the currency clearly.

3. a single paper bill or a metal coin that has a value of one dollar, including la

3.名詞A2
釋義

a single paper bill or a metal coin that has a value of one dollar, including larger collectible coins such as the silver dollar

例句

Tendai found an old silver dollar inside his grandfather's desk drawer.

The ticket machine only accepts dollar bills and does not take any coins.

a dollar bill — the paper form of one dollar

同義詞
  • bill

    specifically a piece of paper money, not a coin; common in American English

  • note

    British English term for paper money

  • coin

    a metal piece worth one dollar, less common than the paper bill in daily US use

文法句型

a + dollar + coin/note/bill

用法筆記

In the United States, the one-dollar bill is far more common than the one-dollar coin. A silver dollar refers to a specific type of large coin that may be collectible.