三、知识讲解

　　知识点1 重点单词

　　concern

　　重点例句： She concerned herself with welfare projects, especially the China Welfare Institute for women and children.

　　concern vt. (sth. concern sb.)

　　(1) =to worry sb.

　　Our losses are beginning to concern me. 我们的损失使我担起心来。

　　Never say: I began to concern our losses.

　　(2) =to be about sth./be important to sb.

　　Don't interfere in what doesn't concern you. 别管与自己无关的事。

　　a report that concerns drug abuse 关于滥用毒品的报告

concerned (adj.)