Chinese Character: 伸 (Shēn - Stretch)
1. 基本特征 (Character Basics)
部首: 扌（提手旁） (radical: hand)
笔画数: 7 (7 strokes)
结构分解: 形声字，从手（扌，与动作相关）、申（shēn，表音），本义指展开肢体（如"伸手"），后引申为延长、扩展（如"延伸"） (ideogram with "扌" (hand) as radical and "申" indicating pronunciation, originally meaning extend limbs (e.g., "reach out"), extended to prolong (e.g., "extend"))
笔顺:
2. 发音 (Pronunciation)
拼音: Shēn (first tone)
3. 含义 (Meaning)
伸指展开肢体（如"伸懒腰"），或向某方向延长（如"延伸"） (Stretch: extend limbs (e.g., "stretch oneself"); Prolong: extend in a direction (e.g., "extend"))
4. 常用词汇 (Common Words)
- 伸展 (shēn zhǎn) - stretch
- 伸手 (shēn shǒu) - reach out
- 延伸 (yán shēn) - extend
- 伸缩 (shēn suō) - expand and contract
5. 语法与用法 (Grammar & Usage)
作动词时可带宾语（如"伸舌头"）；常与"展""手"等词组合（如"伸展""伸手"） (Verb: followed by object (e.g., "stick out tongue"); often combined with "展/手" (e.g., "stretch", "reach out"))
6. 文化背景 (Cultural Background)
"伸"是描述身体动作的高频字，与"缩"（收缩）相对，体现汉语中反义构词的特点；现代语境中"延伸"常用于描述时间、空间或概念的扩展（如"历史延伸"），反映语言的具象到抽象演变 ("伸" is a high-frequency character describing body movements, opposite to "缩" (contract), reflecting Chinese antonymous word formation. Modern "延伸" (extend) is used for time/space/concept expansion (e.g., "historical extension"), showing language evolution from concrete to abstract)
7. 例句 (Example Sentence)
小猫在阳光下伸展身体。(Xiǎo māo zài yáng guāng xià shēn zhǎn shēn tǐ.)
The kitten stretched its body in the sunlight.
他伸手接住了掉落的书。(Tā shēn shǒu jiē zhù le diào luò de shū.)
He reached out and caught the falling book.
8. 记忆技巧 (Memory Tips)
"伸"由"扌"（手）和"申"（伸展）组成，想象用手做伸展动作就是"伸"，通过"手"的动作关联轻松记住含义 ("伸" is composed of "扌" (hand) and "申" (stretch). Imagine using hands to stretch as "stretch", associating with hand actions to remember the meaning)