因为

• 拼音: yīn wèi
• 汉字拆解: 因 = 囗 (enclosure) + 大 (big), originally meaning 'to rely on' then 'cause/reason'; 为 = a simplified form originally meaning 'to do/act,' here functioning as 'for'

含义

Because; because of. Used to give a reason or cause.

The most common way to express cause or reason in Chinese. Often paired with 所以 (therefore) in the pattern 因为...所以... (because...therefore...). Can start a sentence or appear in the middle: 因为下雨，我没去 (Because it rained, I didn't go) or 我没去，因为下雨了 (I didn't go because it rained). Essential for basic conversation.

例句

1. 因为下雨了，所以我们没出去。
2. 他没来上课，因为他生病了。
3. 因为太累了，她很早就睡了。

用法指南

语境: reasoning, explanation, everyday

语气: neutral

正确说法

• 因为我喜欢中国文化，所以我学中文。(Because I like Chinese culture, I study Chinese.)
• 他迟到了，因为路上堵车。(He was late because of traffic.)

错误说法

• 在一个句子里同时省略因为和所以 (Don't drop both 因为 and 所以 from a cause-effect sentence — you can omit one, but keep at least one to make the logical connection clear)

起源与历史

因 (yīn, cause/reason) + 为 (wèi, for/because of). Literally 'cause-for' — expressing the reason for something.

文化背景

世代: All ages

社会背景: Universal