词根：duc, duct = lead 引导

　　1. deduction

　　助记：de(向下)+duce(引导,带来)+tion表名词→向下引→演绎,推论;扣除,减去,扣除额

　　释义：n. 减除，扣除，推论，演绎

　　举例：

　　(1) tax deductions

　　税金扣除额

　　(2) Your deduction is definitely unreasonable.

　　你的推论无疑是不合理的。

　　2. introduction

　　助记：intro(向内,入内,进入)+ duce(引导,带来)+tion表名词→向下引→介绍，引入

　　释义：n. 介绍，引入

　　举例：

　　(1) There is an introduction about Norway in this magazine.

　　这本杂志里有一篇关于挪威的介绍文章。

　　(2) There are two among their recent introductions that have greatly impressed me.

　　他们最新引进的产品中有两件给我留下了深刻的印象。

　　3. reduction

　　助记：re(往回)+ duce(引导,带来)+tion表名词→往回引→减少，缩减

　　释义：n. 减少，缩减

　　举例：

　　Can you give me a 5% reduction?

　　你能给我打九五折吗?

　　4. misconduct

　　助记：mis(mis错误,厌恶,错过)+con(共同)+ duce(引导,带来)→错误引导大家→干坏事

　　释义：n. 不正当的行为;v. 干坏事

　　举例：

　　(1) A psychologist was found guilty of serious professional misconduct yesterday.

　　昨天一名心理学家被判严重的失职罪。

　　(2) These men misconducted themselves in the hall with talking to many women loudly.

　　这些人在大厅里和许多女士大声讲话，行为不检点。