［词 义］ n. 结果；影响；效果
v. 使发生；实现；引起（过去式和过去分词：-ed, -ed;现在分词：-ing）
［派 生 词］ effective adj. 产生预期效果的，有效的
effectively adv. 有效地；实际上，事实上
［必记搭配］ cause and effect 因果
come into effect 生效；开始实施
in effect 事实上；实际上
take effect 开始起作用；见效；生效，开始实施
［例］ Everything has its cause and effect, so why don't you just let it be?
一切皆有因果，你为什么就不顺其自然呢？
A new system of taxation will come into effect next Monday.
新税法体系将于下个星期一开始实施。
They have no formal contract, but he is, in effect, her manager.
他们没有正式的合同，但事实上他是她的经理。
The medicine is taking effect.
药物开始起作用了。
2. weigh
vt.
［词 义］ 重，重量有……；权衡（过去式和过去分词：-ed, -ed; 现在分词：-ing）
［派 生 词］ weight n. 重量，分量
weightless adj. 无重量的，失重的
weighty adj. 重的，沉重的
［必记搭配］ weigh sth against sth 权衡；斟酌
weigh against sb/ sth. 对……有影响，有分量
［必掌握词组］ weigh down 压得……难以移动；压弯
weigh out 称出（一定重量的东西）
weigh up 形成对……的看法，品评
［例］ You have to weigh the costs of the new plan against the benefits it will bring.
你在衡量这个计划所带来的好处时，必须考虑到其费用。
The decision weighed heavily against us.
这项决定对我们极为不利。
The branches of the trees were weighed down by snow.
树枝被雪压弯了。
The shop assistant weighed out the amount of the meat he needed.
店员按照他的需要称了点肉。
The judge carefully weighed all the evidence.
法官仔细地斟酌了所有证据。
3. compete
vi.
［词 义］ 竞争；比赛；对抗
［派 生 词］ competition n. 竞争；竞赛
competitor n. 参赛者；竞赛者；竞争对手
competitive adj. 竞争性的
［必记搭配］ compete with/ against sb. for sth. 和某人为某物竞争／比赛
the competition between/ with sb for sth. 同某人为某物的比赛／竞争
［例］ We can’t compete with them on price.
我们不能和他们在价格上竞争。
Young children will usually compete for their mother’s attention.
孩子们常常会相互间争取母亲的注意力。
There is now serious competition between schools to attract students.
现在学校间争取学生的竞争很激烈。
We produce cheaper but better goods than our competitors.
我们比竞争对手更价廉物美。
Rowing is also a kind of competitive game.
划艇也是一项竞技性比赛。
4. represent
vt.
［词 义］ 代表；象征；展现；描述（过去式和过去分词：-ed, -ed；现在分词：-ing）
［派 生 词］ representation n. 表现；描述
representations n. 陈述；抗议
representative adj. 典型的；有代表性的
representative n. 代表
［同／近义词］ stand for; resemble
［必记搭配］ represent+ n. 代表某人／某团体
be representative of 代表
［例］ She represented her fellow workers at the union meeting.
她在工会会议上代表她的同事。
The red lines on the map represent railways.
地图上红线表示铁路。
You should represent your complaints to the management.
你们应该向管理阶层陈述你们的不满。
Are your opinions representative of those of the other students?
你的意见代表其他的学生吗？
5. worth
adj.& n.
［词 义］ 值得；价值
［派 生 词］ worthy adj. deserving有价值的，有意义的，值得尊敬的，有出息的
worthwhile adj. 值得(做……)
［必记搭配］ be worth sth 值……
be worth doing sth 值得做……
be of worth 有价值的；值钱的
［例］ The new picture is worth at least $ 1,000.
这幅新的画作至少值1,000美圆。
His suggestion is well worth considering.
他的建议很值得考虑。
A college education will be of great worth to you later.
大学教育将会在后来的生活中体现出对你的价值的。
The worth of the discovery was not realized until a hundred years later.
直到一百年后这个发现的价值才被人们意识到。
He is a most worthy young man.
他是个非常有出息的年轻人。
All theses matters are worthy of our attention.
这些事都值得我们关注。
Here is some worthwhile advice to any young businessman.
对于任何一个年轻的商人来说这都是非常有价值的建议。
