Chinese Character: 四 (Sì - Four)
1. 基本特征 (Character Basics)
部首: 囗 (radical: 囗)
笔画数: 5 (5 strokes)
结构分解: 指事字，甲骨文像鼻子喘息呼气之形，本义为“呬”，即呼气。假借表示数字四。(A self - explanatory character. In oracle bone inscriptions, it resembles the shape of a nose breathing out. Its original meaning is "呬", which means exhaling. It is also used as a loan character to represent the number four.)
笔顺:
2. 发音 (Pronunciation)
拼音: Sì (fourth tone)
3. 含义 (Meaning)
“四”主要表示数字，是三加一所得的数目。(“四” mainly represents the number four, which is the result of three plus one.)
4. 常用词汇 (Common Words)
- 四季 (sì jì) - four seasons
- 四周 (sì zhōu) - all around; four sides
- 四肢 (sì zhī) - four limbs
- 四月 (sì yuè) - April
5. 语法与用法 (Grammar & Usage)
“四”是数词，常与量词搭配使用（如“四个苹果”），也可用于表示顺序（如“第四名”）。(“四” is a numeral, often used in conjunction with quantifiers (e.g., "四个苹果" - four apples), and can also be used to indicate order (e.g., "第四名" - fourth place).)
6. 文化背景 (Cultural Background)
在中国文化中，数字“四”有特殊含义。一方面，它与“死”谐音，在一些场合被视为不吉利的数字；另一方面，它也代表着稳定和平衡，如“四季”“四方”等概念。(在中文文化中，数字“四”有特殊含义。一方面，它与“死”谐音，在一些场合被视为不吉利的数字；另一方面，它也代表着稳定和平衡，如“四季”“四方”等概念。)
7. 例句 (Example Sentence)
一年有四个季节。(Yī nián yǒu sì gè jì jié.)
There are four seasons in a year.
他坐在房间的四周。(Tā zuò zài fáng jiān de sì zhōu.)
He is sitting around the room.
8. 记忆技巧 (Memory Tips)
可以联想生活中常见的“四季”“四肢”等词汇，帮助记忆“四”的含义和用法。同时，注意其发音为第四声。(You can associate common words in life such as "四季" (four seasons) and "四肢" (four limbs) to help remember the meaning and usage of "四". Also, note that its pronunciation is in the fourth tone.)