一、核心词汇解析

1. 词汇积累的重要性

在考研英语中,词汇是基础中的基础。掌握足够的词汇量,有助于提高阅读速度和理解能力,同时也能在写作和翻译部分得心应手。以下是一些考研英语第二单元的核心词汇:

1.1 词汇列表

  • abandon:放弃,遗弃
  • benefit:利益,好处
  • challenge:挑战
  • contribute:贡献,捐献
  • decrease:减少
  • evaluate:评估
  • influence:影响
  • increase:增加
  • knowledge:知识
  • objective:目标

1.2 词汇用法举例

  • abandon:The company decided to abandon its outdated technology.
  • benefit:Regular exercise can benefit both physical and mental health.
  • challenge:The project presented a new challenge to the team.
  • contribute:He contributed a lot to the success of the project.
  • decrease:The number of students enrolled in the program has decreased.
  • evaluate:The performance of the product was evaluated by experts.
  • influence:The weather influenced our decision to cancel the trip.
  • increase:The company plans to increase its workforce by 20% next year.
  • knowledge:Widening one’s knowledge is an ongoing process.
  • objective:The main objective of the research is to find a new treatment for the disease.

2. 词汇记忆方法

为了更好地记忆这些核心词汇,以下是一些有效的记忆方法:

  • 词根词缀法:通过分析单词的词根、前缀和后缀,来推测其意义。
  • 语境记忆法:将单词放在句子或段落中,理解其在具体语境下的含义。
  • 卡片记忆法:制作单词卡片,正面写单词,背面写释义和例句。

二、语法解析

1. 句子结构

在考研英语中,掌握常见的句子结构对于提高阅读和写作能力至关重要。以下是一些常见的句子结构:

  • 简单句:主语+谓语
  • 并列句:由两个或多个简单句通过并列连词连接而成
  • 复合句:包含主句和从句,从句可以为主语从句、宾语从句、表语从句或定语从句

2. 语法知识点

2.1 主谓一致

  • 单数主语:谓语动词用单数形式
  • 复数主语:谓语动词用复数形式
  • 就近原则:主语和谓语动词在数上保持一致

2.2 定语从句

  • 关系词:关系代词(who, which, that等)和关系副词(where, when, why等)
  • 先行词:定语从句所修饰的名词或代词

2.3 非谓语动词

  • 动词不定式:to + 动词原形
  • 动名词:动词原形 + -ing
  • 分词:现在分词(-ing)和过去分词(-ed)

3. 语法练习

为了巩固语法知识,以下是一些语法练习题:

  1. The company decided to ________ its outdated technology. A. abandon B. benefit C. challenge D. contribute

  2. Regular exercise can ________ both physical and mental health. A. decrease B. evaluate C. influence D. increase

  3. The number of students enrolled in the program has ________. A. knowledge B. objective C. decreased D. evaluated

通过以上词汇和语法解析,相信你已经对考研英语第二单元有了更深入的了解。在接下来的复习过程中,结合实际练习,不断提高自己的英语水平。祝你考研成功!