【温馨提示】：以下是精品学习网小编应广大考生的需要，特为参小编应广大考生的需要，特为参加考试的考生策划专题有关资料，供考生参考!
(一)形容词、副词的比较级和最高级
英语中当要表示“比较......”以及“最......”的时候，往往要用比较级和最高级。形容词和副词都有比较级和最高级，其构成方法有两种：一种是直接在形容词或副词后加词缀-er,-est;另一种是在形容词和副词前面加副词more,most。
1.加-er,-est(适合于单音节词和一部分双音节词)，如：
原型 比较级 最高级
early earlier earliest
quick quicker quickest
small smaller smallest
2.加副词more，most(适合多音节词和一部分双音节词)，如：
原型 比较级 最高级
beautiful more beautiful most beautiful
complicated more complicated most complicated
valuable more valuable most valuable
3.少数形容词和副词在变比较级和最高级时有特殊的形式，如：
原型 比较级 最高级
good/well better best
many/much more most
little less least
在使用比较级的时候，常常用than引导状语从句，指出谁与谁相比。如：
He is taller than I.
She went to school earlier today than (she did ) yesterday.
I did morning exercises more often this year than(I did ) last year.
公共英语四级核心内容讲解
(一)重点词汇讲解
cliché n.铅板;陈词滥调;老生常谈
[例句] I know it's a bit of a cliché, but she means everything to me.
[译文] 我这话听起来不免像老套子，不过对我来说，她的确意味着一切。
tangible adj.有形的;有实质的;可触知的
[例句] Sculpture is a tangible art form.
[译文] 雕刻是一种可触摸的艺术形式。
Collapse v.崩溃
[例句] The country's economy is on the verge of collapse.
[译文] 这个国家的经济已到了崩溃的边缘。
instaneous adj.瞬间的;即刻的
[例句] She accidently swallowed the poison and death was instaneous.
[译文] 她意外地的吞下了毒药，当即就死去了。
invaluable adj.无价的，无法估价的
[例句] His advice has been invaluable to the success of the project.
[译文] 他的建议对于这项工程的成功是无可估量的。
boost v.提高，推广
[例句] These changes will help to boost share prices.
[译文] 这些变化将有助于提高股票价格。
pronounced adj.明显的
[例句] He has very pronounced ideas on everything.
[译文] 他对一切事情都有明确的看法。
barrier n.障碍
[例句] Lack of confidence is the biggest barrier to investment is the region.
[译文] 缺乏信心是在这一地区投资的最大障碍。
(二)核心短语讲解
(1) work on 致力于，为......工作。如：We've been working on expanding our scope of cooperation with China.我们一直致力于扩大与中国的合作范围。
(2) I mean the first five years...我的意思是指最初的五年...... I mean在日常会话中很常用，表示“我的意思是......”。如：I mean you should work hard on your study. 我的意思是你应该努力学习。
(3) what's more而且，更重要的是，更有甚者。如：She admitted she'd spoken to them, and what's more had told them about our secret discussion.她承认好和他们讲了话，更糟的是把我们秘密讨论的内容都告诉了他们。