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before的词群的资料，希望对你的词汇拓展有所帮助！

Group 23 Pre-before

“先前”

preface

n. 序文　

The preface usually provides information that the reader should know before beginning the book.

序文常提供读者一些开始阅读前的须知信息。

preview

n. 试演；试片　

Last night my parents attended a preview of a play scheduled to open next Tuesday.

昨天晚上我父母亲去看了一出定于下星期二演出戏剧的试片。

precede

vt. 在……之前　

Did your report follow or precede Jane's?

你的报告在珍之后还是之前？

preclude

vt. 阻止　

A prior engagement precludes my coming to your party.

先前的一个约会使我不能参加你的宴会。

preconceiv

vt. 预先形成　

My preconceived dislike for the book disappeared when I read a few chapters.

先前对这本书的厌恶在我读了几章以后就消失了。

prefabricate

vt. 预先逮造组合　

Prefabricated homes are quickly erected by putting together large sections previously constructed at a factory.

组合式房屋只要把事先在工厂做好的大组件拼装起来，就可以很快地盖好。

premeditate

vt. 预谋　

The jury decided that the blow was struck in a moment of panic and had not been premeditated.

陪审团判决那一拳是在恐慌下击出的，并非预谋。

presume

vt. 假定；推测　

Nineteen of the sailors have rescued. One is missing and presumed dead.

十九个水手获救，有一个失踪且被认为死亡。

precocious

adj. 早熟的　

If Nancy's three-year-old brother can read, he must be a precocious child.

如果南茜三岁大的弟弟会读书，那他一定是个早熟的小孩，