fortieth

• 序数词，表示在序列中排在第四十位。

An ordinal number adjective indicating the position of something in a sequence that corresponds to the number forty.

1. Ordinal numberA2formal

   The number that comes after thirty-ninth and before forty-first in a sequence.

   第四十

   • She celebrated her fortieth birthday with a big party.
   • He finished in fortieth place in the marathon.
   • The fortieth chapter of the book is the most exciting.

• 名词，表示序列中的第四十个位置或元素，即第四十个。也指四十分之一的部分。

A noun referring to the position or item that is number 40 in a sequential or countable series.

1. Position 40 in a seriesB1formal

   The element that occupies the number 40 position in a countable sequence.

   第四十个

   • He was the fortieth person to arrive at the event.
   • The fortieth chapter of the book is the most exciting.
   • She finished in fortieth place in the marathon.

• 数词，表示四十个物品、人或计数单位；是十的倍数的一个整数；也可用作名词、量词或代词。

The cardinal numeral representing the quantity of forty units; the fortieth positive integer following thirty-nine; a composite number (2³×5) and a round multiple of ten. Notably, it is spelled without a 'u' (forty, not fourty). Also functions as a noun (denoting the symbol, quantity, or group of forty), adjective/determiner (modifying nouns to indicate quantity), and pronoun (standing in for a plural noun phrase).

1. Cardinal numeral: the number 40A1formal

   Used to denote a quantity of forty persons or things; the fortieth positive integer in the sequence of natural numbers; a composite number (2³×5); represents a fortyfold quantity in counting, mathematics, and everyday usage.

   基数词：数字40

   • The course lasts for forty weeks.
   • She scored forty points in the championship.
   • Forty plus forty equals eighty.
   • The speed limit is forty miles per hour.
   • He read forty chapters of the textbook this month.

2. Noun: the number, symbol, or group of fortyA2formal

   A noun referring to the cardinal number forty; the numeral symbol 40 or XL; a set, collection, or group consisting of forty items; a playing card displaying forty (in extended decks); a team or ensemble of forty members; in currency, a forty-unit banknote.

   名词：数字、符号或四十个一组

   • The number forty marks the midpoint of the first half-century.
   • Circle the forties in this demographic chart.
   • The festival featured a forty of international artists.
   • In some card games, the forty is a high-value card.
   • The payroll report lists a forty of contractors.

3. Adjective/Determiner: amounting to fortyA1formal

   Used attributively before a noun to indicate that the quantity or number of the noun is forty; modifies plural countable nouns to specify exact quantity.

   数量为四十的

   • They completed a forty-day hiking expedition.
   • We need forty additional badges for the conference.
   • The laboratory procedure requires forty milliliters of reagent.
   • She has forty years of experience in education.
   • Forty regional branches participated in the audit.

4. Pronoun: forty people or things (plural)B1formal

   Used as a pronoun to refer to forty previously mentioned or understood persons or things; takes plural verb agreement.

   代词：四十个人或事物

   • Three hundred applied, but only forty were invited to interview.
   • I invited two hundred guests; forty confirmed their attendance.
   • How many copies should we print? — Forty will be sufficient.
   • Several vendors submitted proposals, but forty advanced to the evaluation stage.
   • Of the applications reviewed, forty were approved for grants.