in addition 与 in addition to 的用法区别

什么是 “in addition”？

in addition 是一个副词性短语，通常用于句首或句中，表示“此外”、“而且”，后面常接逗号，引出额外的信息。

例句：

• In addition, she speaks three languages.
• He is a great writer. In addition, he is an excellent speaker.

什么是 “in addition to”？

in addition to 是一个介词短语，后接名词、代词或动名词（即动词的 -ing 形式），表示“除了……之外（还）”。

例句：

• In addition to English, she speaks French and Spanish.
• In addition to working full-time, he volunteers on weekends.

主要区别总结

1. 词性不同： in addition 是副词短语；in addition to 是介词短语。
2. 结构不同： in addition 后面不能直接跟宾语；in addition to 必须后接宾语（名词/代词/动名词）。
3. 位置不同： in addition 常用于句首或独立使用；in addition to 通常位于句中引导一个介词短语。

常见错误示例

❌ 错误：In addition playing the piano, he also sings.
✅ 正确：In addition to playing the piano, he also sings.

❌ 错误：She likes reading in addition books.
✅ 正确：She likes reading in addition to books. （但更自然的说法是：In addition to books, she likes reading.）