series

series — noun

1. a group of events, actions, or things that follow each other in order and are co

1.名詞A2
釋義

a group of events, actions, or things that follow each other in order and are connected in some way

例句

A series of earthquakes shook the coastal town last spring.

a series of + plural noun as subject

Ziad attended a series of workshops on renewable energy.

a series of + noun for ordered events

同義詞
  • sequence

    focuses on the order in which things happen; more formal than 'series'

  • chain

    emphasises that each event is linked to the next, often with a cause-effect connection

  • succession

    formal; stresses that one thing follows another without interruption

反義詞
  • single event

    a one-time occurrence rather than a connected group

文法句型

a series of + plural noun + singular verb

用法筆記

The phrase 'a series of' is followed by a plural noun but typically takes a singular verb: 'A series of meetings IS planned.'

常見錯誤

A series of lectures are scheduled.
A series of lectures is scheduled.
💡'series' is singular here, so use a singular verb.
We watched a serie of videos.
We watched a series of videos.
💡'series' has the same form in singular and plural.

2. a set of games played between two teams, usually over several days or weeks, to

2.名詞B1
釋義

a set of games played between two teams, usually over several days or weeks, to decide which team wins overall

例句

The Yankees won the first two games of the World Series.

proper noun + Series for major sporting event

Brazil and Argentina will play a five-match series next summer.

[number]-match/game series

同義詞
  • playoff

    a series of games to decide a championship; more limited in scope

  • tournament

    a competition involving many teams, not just two

文法句型

the [name] + series

a [number]-game series

常見錯誤

The series have five games.
The series has five games.
💡even in sports, 'series' takes a singular verb.

3. a method of connecting electrical components along a single pathway, where the c

3.名詞B2
釋義

a method of connecting electrical components along a single pathway, where the current must travel through each component in turn

例句

In a series circuit, if one bulb fails, all the other bulbs go dark.

in a series circuit — contrasting with parallel

The technician connected the two resistors in series to increase the total resistance.

connected in series

同義詞
反義詞
  • parallel

    an arrangement where current flows through multiple branches at the same time

文法句型

connected in series

in series with + noun

用法筆記

This sense is almost always used in the phrase 'in series' or 'series circuit'. It contrasts with 'parallel', where current flows through multiple branches at once.

常見錯誤

The batteries are connected on series.
The batteries are connected in series.
💡always use 'in', not 'on'.

4. a group of TV or radio shows built around a shared topic, characters, or style,

4.名詞A2
釋義

a group of TV or radio shows built around a shared topic, characters, or style, broadcast on a regular schedule

例句

The Netflix series about a chef in Tokyo became hugely popular.

series about [topic] — introducing subject

Élise never missed an episode of her favourite radio series.

同義詞
  • programme

    broader term; can refer to a single broadcast, not necessarily a set

  • show

    informal; often interchangeable with 'series' in everyday speech

文法句型

a [genre] series

the [title] series

用法筆記

A 'series' covers all episodes across all seasons (e.g. 'the Harry Potter film series' or 'the entire TV series'). A 'season' is the set of episodes released in one year.

常見錯誤

I watched a series episode.
I watched an episode of the series.
💡'series' describes the whole programme, not one episode.

5. multiple books issued by the same publisher that share a common topic, storyline

5.名詞B1
釋義

multiple books issued by the same publisher that share a common topic, storyline, or characters

例句

The Harry Potter series has sold millions of copies worldwide.

the [title] series — most common pattern

Mayumi collected every volume in the science-fiction series.

同義詞
  • collection

    broader; can refer to any grouped items, not necessarily sequential

  • set

    less specific; may not imply sequential volumes

文法句型

a [genre] series

the [title] series

a series of [number] books

常見錯誤

I read the third series of the trilogy.
I read the third book of the series.
💡'series' refers to the set; individual parts are 'books' or 'volumes'.

6. the sum of the terms in a sequence of numbers or mathematical expressions, which

6.名詞C1
釋義

the sum of the terms in a sequence of numbers or mathematical expressions, which may be finite or infinite in length

例句

Joaquín learned in maths class today that the arithmetic series 1 plus 2 plus 3 plus 4 equals 10.

arithmetic series — specific type of series

In calculus class, Kwame learned how to find the sum of an infinite series.

infinite series — series with no end

同義詞
  • summation

    more general term for adding terms together

反義詞
  • sequence

    an ordered list of terms, as opposed to their sum

文法句型

[type] series

the sum of a series

infinite series

用法筆記

In mathematics, a 'sequence' is an ordered list of numbers (e.g. 1, 2, 3, 4), while a 'series' is the sum of those numbers (e.g. 1+2+3+4 = 10). Do not confuse the two.

常見錯誤

The series 1, 2, 3, 4 adds up to 10.
The sum of the series 1+2+3+4 is 10.
💡a series is the sum itself, not the list of numbers (that is a sequence).

7. several postage stamps designed around the same theme, or a set of coins or bank

7.名詞C1
釋義

several postage stamps designed around the same theme, or a set of coins or banknotes produced as a collectible series

例句

The butterfly series of stamps was issued by the post office in 2021.

butterfly series of stamps — theme-based naming

Selim showed his Olympic-series coins from the 1984 games.

同義詞
  • set

    less formal; used more broadly for any grouped collectible items

文法句型

a [theme] series of stamps/coins

the [name] series