近年来，托福、GRE、GMAT、研究生入学考试和其他各种英语等级考试，都倾向于单词范围越来越深广，难度越来越深，而词汇量不足，全盘都会受影响!突破难记易记的瓶颈，背单词要从根抓起;词根相同的一起背;词义相同的一起记!以下是小编整理的关于刘毅词汇22000 有关down的词群的资料，希望对你的词汇拓展有所帮助！

Group16 De-down, opposite of

“向下；相反”

demolish

vt. 破坏；拆除　

A wrecking crew is demolishing the old building.

拆除队正在拆除这幢老建筑物。

demote

vt. 降级　

For eing absent without leave, the corporal was demoted to private.

这位下士因未经许可擅自缺席而被降为上等兵。

depreciate

1. 减价，贬值 2. 轻视　

Automobiles deprecate rapidly; a $ 2500 car is worth less than $ 2000 within a year of purchase.

汽车贬值很快；一辆两干五百元的车买不到一年就不值两千元了。

The building superintendent feels depreciated if you refer to him as the "janitor".

如果你叫这幢建筑物的管理员“门房”，他就会觉得被轻视了。

despise

vt. 轻视　

Students who tell lies are despised by their classmates.

说谎的学生为同班同学所轻视。

deviate

vi. 越出正轨；违反　

Mr. Parker always notifies the parents when a student neglects his homework, and he will not deviate from this rule in your case.

每次学生不写家庭作业时，派克先生都会通知他的父母，当然你这次他也不会违反原则的。

devour

vi. 狼吞虎咽，吞食　

The children must have been starved when they came in for dinner because they devoured their food.

孩子们在进来吃晚饭时一定饿坏了，因为他们狠吞虎咽地把食物吃掉。

decadent

adj. 颓废的；式微的　

The decadent downtown section was once a flourishing business district.

式微的闹区地段一度曾是繁华的商业区。

deciduous

adj. 落叶性的 　

Maple, elm, birch, and other deciduous trees lose their leaves in the fall.

枫、榆、桦及其他落叶性的树木在秋天掉叶子。

demented

adj. 疯狂的　

Whoever did this must have been demented; no sane person would have acted in such a way.

凡是做这件事的人一定是疯了，没有任何正常人会这么做。

dependent

adj. 依赖的　

Children are dependent on their parents until they are able to earn their own living.

小孩在他们能独立谋生前都得依赖父母。