(1) from1-10 One, two, three, four, five, six, seven, eight, nine, ten. ..

(2) From 1 1—— 19 eleven, twelve, Thieten, fourTeen, fifteen teen, sixteen, seventeen, eighteen and nineteen, except eleven, twelve, Thieten and fifteen teen, eight is a special form, fourteen, sixteen, seventeen and nineteen.

(3) Among dozens of integers from 20 to 99, except for 20, 30, 40, 50 and 80, six, 70 and 90 are their single-digit forms, plus the suffix -ty. When tens are represented, the hyphen "-"2121767-6 is added between tens and the form of unit cardinal words.

Second, the ordinal number:

1 first; ; Second; Third; Fourth; fifth

Sixth; Seventh; Eighth; Ninth; No. 10, tenth

No. 1 1 Eleventh; ; No 12 12; ; 13 article 13; ; No 14 14; No. 15 Fifth

Article 16 ofNo. 16; ; 17 article 17; ; Article 18 ofNo. 18; ; 19 article 19; ; Twentieth session

2 1 21st; Twenty-second of the twenty-second session; Twenty-third of the twenty-third session; Twenty-fourth of the twenty-fourth session; The 25th session

26th of the 26th; Twenty-seventh; 28 th, 28 th; Twenty-ninth; Thirtieth

Extended data:

Original words can be used as subject, object, attribute, predicative and appositive in sentences.

Primitive words mainly indicate the number of things or people.

Two people happily opened the box .. Two people happily opened the box. (as subject)

Four students are playing volleyball outside. Four students are playing volleyball outside. (as an attribute)

The three of them tried to finish the task before sunset. The three of them tried their best to finish the task before sunset. (appositive)

Baidu Encyclopedia-Basic Vocabulary