thirty

IPA/ˈθɜː.ti/

KK[θˈɚdˌi]IPA/ˈθɝː.t̬i/

1.數詞A1

釋義

三十

表示數量、年齡或30的數值

used to say that there are 30 people or things, or that an amount, age, time, or measurement is 30

例句

Quan invited thirty classmates to his birthday party at the park.

Quan 邀請了三十位同學到公園參加他的生日派對。

The temperature outside reached thirty degrees by noon today.

到中午時，外面的溫度已經達到三十度。

collocation: thirty degrees for temperature

常見錯誤

❌She is thirty years.

✅She is thirty years old.

💡For age, add 'old' or simply say 'She is thirty.'

1.名詞A1

釋義

數字三十

把30當成數字名稱或數值來說

the number 30 when you mention it as a number name, written figure, or value, rather than using it to count things

例句

Thirty is Vivek's lucky number, so he chose seat thirty on the train.

三十是 Vivek 的幸運數字，所以他在火車上選了三十號座位。

thirty used as a noun subject

Write the number thirty at the top of your answer sheet.

在答案卷最上方寫上數字三十。

用法筆記

This noun use often appears after words like number, page, size, or seat. When you are counting things directly, use the number sense instead: 'thirty students,' not 'a thirty students.'

常見錯誤

❌I have thirty of apples.

✅I have thirty apples.

💡When counting things, use thirty before the noun instead of as a separate noun.

2.名詞A2

釋義

三十幾

指30到39歲，也可指30年代

the numbers from 30 to 39, especially when talking about a person's age, a temperature range, or a decade in a century

例句

Élise is in her thirties and works as a nurse at the city hospital.

Élise 三十多歲，在市立醫院當護理師。

in + possessive + thirties for age range

The temperature in July often stays in the low thirties in southern Spain.

西班牙南部七月的氣溫常常維持在三十幾度。

文法句型

in + possessive + thirties

the + nineteen + thirties

low + thirties

用法筆記

For age, use the plural form with a possessive determiner: 'in her thirties.' For decades and temperature ranges, use 'the thirties' or modifiers like 'low,' 'mid,' and 'late' without a possessive.

常見錯誤

❌She is in thirty.

✅She is in her thirties.

💡Age ranges use the plural form with a possessive determiner.

❌He is thirty's old.

✅He is thirty years old.

💡Use exact age with 'thirty,' not the plural noun 'thirties.'

thirty

thirty — 數詞

1. used to say that there are 30 people or things, or that an amount, age, time, or

常見錯誤

thirty — 名詞

1. the number 30 when you mention it as a number name, written figure, or value, ra

用法筆記

常見錯誤

2. the numbers from 30 to 39, especially when talking about a person's age, a tempe

文法句型

用法筆記

常見錯誤