attenton[留意/留心]
-eg：I am writing to draw your attention that ... ;
bring sth. to sb's attention/catch(arrest/foucs) sb's attention on sth;
complain[抱怨/投诉]
-eg: I am writing to complain about ...;
complain about/of抱怨某事物;
complain to向...抱怨。
以上就是新航道雅思频道为大家整理的雅思写作必备词汇之留意_留心，希望对大家有帮助，更多资讯、资料请访问新航道雅思写作频道 http://www.xhd.cn/ielts/xiezuo/
