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March 24, 2026
思sī(si1)
The character 思 (sī) means 'to think' or 'to consider.' It is commonly used in contexts where one reflects on ideas, feelings, or decisions. This character conveys a sense of deep contemplation rather than just superficial thought.
Strokes9Radical心Frequency#3930DifficultyHard
Cultural Note
In Chinese culture, thinking and reflection are highly valued, especially in philosophies like Confucianism, where deep contemplation is seen as a way to cultivate virtue and wisdom.
Memory Tip
Think of the character 思 as a person deep in thought, with their head (the top part) tilted down, representing the act of pondering. The pronunciation 'sī' sounds like 'see,' which you can link to seeing the many possibilities in your thoughts.
Meanings of 思
sī(si1)
1to think
2to consider
Exercise 1 of 2
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About 思
思Simplified
9Strokes
心Radical
名词míngcínoun (n.)Part of Speech
#3930Frequency Rank
HSK 3.0L5
Podcast: 思
Podcast: 思
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AI Study Notes for 思
Quick Contrast
想 (xiǎng) vs 思 (sī): Use 思 when emphasizing deep contemplation, while 想 is more about general thinking or considering.
Memory Mnemonic
Think of the character 思 as a person deep in thought, with their head (the top part) tilted down, representing the act of pondering. The pronunciation 'sī' sounds like 'see,' which you can link to seeing the many possibilities in your thoughts.
Usage Notes
思 is often used in both formal and informal contexts, but be aware that it can convey a deeper, more serious consideration. Common collocations include 思考 (sīkǎo, to think deeply) and 思念 (sīniàn, to miss someone). A common mistake is to confuse it with simpler terms for 'think' in casual conversation.
HSK Study Tips
While 思 is not currently included in the HSK vocabulary lists, it connects well with other verbs related to mental processes like 想 (xiǎng, to think) and 认为 (rènwéi, to believe). Students should focus on its usage in compound words and phrases.
Cultural Note
In Chinese culture, thinking and reflection are highly valued, especially in philosophies like Confucianism, where deep contemplation is seen as a way to cultivate virtue and wisdom.
Common Mistakes
Learners often confuse 思 with 想; for example, saying '我思一个问题' instead of '我想一个问题' (Wǒ sī yīgè wèntí). The correct usage would be '我在想一个问题' (Wǒ zài xiǎng yīgè wèntí).
AI-enhanced 2026-03-24
Pronunciation of 思
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Grammar Patterns of 思
思 functions as a noun — it names a person, place, thing, or concept. Place it as a subject before the verb (主+谓) or as an object after the verb (谓+宾). Most Chinese nouns require a measure word between the number and the noun (e.g. 一个/三本). It carries 3 related meanings, each with its own usage notes below. The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.
Regarding this issue, he needs to think independently for a while before making a decision.
Cultural Notes for 思
🏮Cultural insight
In Chinese culture, thinking and reflection are highly valued, especially in philosophies like Confucianism, where deep contemplation is seen as a way to cultivate virtue and wisdom.
Word Family of 思
Compounds23
崽zai3child, servant; a diminutive
腮sai1jaw; gills
锶si1strontium
鳃sai1fish gills
偲
勰xie2peaceful, harmonious
揌
缌si1fine linen
罳
葸xi3afraid, bashful, insecure
飔
媤
愢
慮lü4anxious, concerned, worried
楒
毸
禗
緦
諰
鍶
颸
騦
鰓sai1fish gills
Words Containing This Character20
意思yìsiidea
思想sīxiǎngthought
不好意思bùhǎoyìsito feel embarrassed
有意思yǒuyìsiinteresting
思考sīkǎoto reflect on
思sīto think
思维sīwéithinking思維
不可思议bùkěsīyìunfathomable不可思議
思路sīlùthinking
心思xīnsimind
毛泽东思想Maoism毛澤東思想
思念sīniànto think of
马克思主义Marxism馬克思主義
反思fǎnsīto review
马克思Marx (name)馬克思
思索sīsuǒto ponder
没意思méiyìsiboring沒意思
构思gòusīto design構思
思绪mood思緒
沉思chénsīto ponder
Exercise 1 of 4
Compound Meaning
What does 崽 mean?
Frequently Asked Questions about 思
思 (sī) implies a deeper level of contemplation, while 想 (xiǎng) usually refers to thinking in a more casual or immediate sense.
Yes, but it is more commonly found in formal writing or discussions where deeper thought is emphasized.
You can say '我在思考这个问题' (Wǒ zài sīkǎo zhège wèntí), meaning 'I am thinking about this problem.'
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