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two和half的词群的资料，希望对你的词汇拓展有所帮助！

Group05 Bi-two; Group06 Semi-half

“二” “一半”

bicentennial

n. 两百周年纪念　

The bicentennial of George Washington's birth was celebrated in 1932.

乔治·华盛顿两百周年生日纪念于1932年举行。

semicircle

n. 半圆　

At the end of the lesson, a group gathered about the teacher in a semicircle to ask additional questions.

下课后，一群学生聚在老师身旁围成半圆，问一些额外的问题。

bisect

vt. 平分；切分为二　

A diameter is a line that bisects a circle.

直径就是平分一个圆的直线。

bicameral

adj. 两院制的　

The american legislature is bicameral;it consists of the House of Representatives and the Senate.

美国立法制度是两院制的；包括众议院及参议院。

biennial

adj. 两年一次的　

A defeated candidate for the House of Representatives must wait two years before running again, because the elections are biennial.

一位竟选失败的众议院候选人需等两年才能再度竞选，因为选举是两年一次的。

bimonthly

adj. 两个月一次的　

We receive only six bills a year because we are billed on a bimonthly basis.

我一年只收到六次帐单，因为我们是双月送帐制。

semiannual

adj. 每半年一次的　

Promotion in our school is semiannual;it occurs in January and June.

我们学校每半年升迁一次；各在一月及六月。

semimonthly

adj. 每半个月一次的　

Employees paid on a semimonthly basis receive two salary checks per month.

半月制付薪的职员一个月收到两次薪水支票。

bilateral

adj. 双边的

French forces joined the Americans in a bilateral action against the British at the Battle of Yorktown in 1781.

法军加入美军形成双边行动，在1781年的约克镇战役中共同对抗英国。

bilingual

adj. 1. 能说两种语言的 2. 以两种语言写成的　

Montreal has a large number of bilingual citizens who speak English and French.

蒙特利有很多市民能说英、法两种语言。

Some schools in Spanish-speaking communities send bilingual notices, written in English and Spanish, to the parents.

一些在西班牙语区内的学校会寄以英文及西班牙文两种语言写成的通知给学生家长。

bipartisan

adj. 两党的　

Congressional committees are bipartisan;they consist of both Democratic and Republican members.

国会的委员会是两党制的，包括民主与共和两党的党员。

semiconscious

adj. 半意识的　

In the morning, as you begin to awaken, you are in a semiconscious state.

早晨你刚醒来时是处于一种半意识的状态中。

semidetached

adj. 半分离的；双拼式的　

All the houses on the block are attached, except the corner ones, which are semidetached.

这一街区的房屋都互相毗邻，只有拐角那些双拼式的房子例外。

semiskilled

adj. 半熟练的　

Workers who enter a semiskilled occupation do not have to undergo a long period of training.

进入只需半熟练技巧行业的工人不必受长期间的训练。