Ordinal number: 1 First.2 Second.3 Third.4 Fourth.5 Fifth

Numerals in English are mainly divided into cardinal numbers and ordinal numbers. The so-called cardinal number is mathematically understood as a number with comparable size. Primitive words in English are used to describe the quantity of things. Therefore, the definition of cardinality is: the number describing the number of things is called cardinality. The cardinal number 1 to 5 is: 1 1.2 2.3.3.4.55.

Ordinal number is a kind of numeral, which is mainly mentioned in English grammar and expressed as "which number" in Chinese. In addition, when describing your date of birth, you will also use ordinal numbers in your birthday. The ordinal number 1 to 5 is: 1 first.2 second.3 third.4 fourth.5 fifth.

Extended data:

The changing rules of cardinal words are as follows:

1, 1 to 10 is irregular: one, two, three, four, five, six, seven, eight, nine, ten; ;

2. From 1 1 to 19: eleven, twelve, thirteen, fourteen, five teenagers, sixteen, seventeen, eighteen, nineteen; ;

3. From 20 to 99: Except for 20 (20), 30 (30), 40 (40), 50 (50) and 80 (80), dozens of integers are in the form of single digits, and six (60), seven (70) and nine (90) are all suffixed.

4. Add "one percent" to the form of hundred digits, which means hundred, and add and between tens and hundreds.