Part of speech conversion: concern (verb) means to affect or be about, concern (noun) means worry or interest, and concerned (adjective) means worried or interested.
词性转换：concern（关心）、concern（担忧）、concerned（担心的）。
| 知识 | concern [v]关心 concern [n]担忧 concerned [adj]担心的 |
|---|---|
| 《》 | 词性转换 |
Tags: 英语词性转换
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