下面就是新东方在线雅思频道为大家收集整理的雅思写作常用词汇：根本原因/倾向，供大家参考。更多雅思报名官网的最新消息，最新、最专业的雅思备考资料，新东方在线雅思频道将第一时间为大家发布。

　　root cause[根本原因] - [拓]direct/primary cause[直接/主要原因];

　　propensity[倾向]

　　- eg: violence propensity[暴力倾向]

　　These juvenile offenders are in need of treatment because they have a negative deposition & high propensity to continue committing crime.