电类专业英语lesson2

1. Which parts does a market research generally consist of?
2. What makes a market report effective and impressive?
Unit 2 Market Research
Reading A
Gas Compressor Market in China — The Past and the Future
Unit 2 Market Research
Task 1 As a market researcher, Ellen may experience the
following situations. Match each situation with its corresponding picture.
As a kind of general machinery, gas compressor is widely
used in such industries as petrochemical, steel, metallurgy and automobile. Gas compressor is mainly divided into several types, including centrifugal gas compressor, reciprocating gas compressor, and piston gas compressor.
1. There is a sharp increase in the last five years, that is, from 2003-2008.
2. The past decade witnessed a steady decrease in the labor costs in this field.

Translation of passivity被动句 的翻译——不保留原来的主语
2.不保留原来的主语 (1)译成无主语句（不愿或不能说出主动者 时采用） (2)恢复或补充主语
Translation of passivity被动句 的翻译——不保留原来的主语
（1）译成无主语句（不愿或不能说出主动 者时采用） Much greater magnification can be obtained with the electron microscope 使用电子显微镜，可以获得 获得更大的放大 获得 倍数。
Translation of passivity被动句 的翻译——保留原来的主语
1.保留原来的主语 原文主语仍然作译文的主语，谓语根据 不同的情况采用不同的翻译。 (1)译成在动词前加助词‘被’ (2)用‘由’‘受’‘为’‘让’‘给’ 等词引出 (3)译成‘是…的’加强句。
Translation of passivity被动句 的翻译——保留原来的主语
Translation of passivity被 动句的翻译——谓语分译
3.谓语分译 把原文的被动谓语分出来，译成一个带 或不带主语的独立语，用于某些固定句 型中。
Translation of passivity被 动句的翻译——谓语分译
Hydrogen is known to be the lightest element 总所周知，氢是最轻的元素。 It need not be said that all factors must be taken into consideration. 不用说，所有因素都必须考虑在内。
(2)用‘由’‘受’‘为’‘让’‘给’等 词引出。多数是be…ed by结构。

Chapter 2 Analog Electronics 模拟电子学
1. 内容简介
本章主要介绍运算放大器、差分放大器、积分器、微分
器和有源滤波器等器件的工作原理。
2.文中涉及理论知识可参考《模拟电子学》中有关内 容。
3.生词与短语
▪ 1. analog electronics
模拟电子学
▪ 2. feedback
▪ 26. differential
adj. 差动的，微分的
▪ 27. rejection
n. 抑制, 衰减
▪ 28. integrator
n. 积分器
▪ 29. differentiator
n. 微分器
▪ 30. capacitor
n. 电容器
Chapter 2 Analog Electronics
Chapter 2 Analog Electronics
[2]Feedback is a technique by which gain of the analog system can be exchanged for other desirable qualities such as wider bandwi ▪ 32. bias ▪ 33. passive filter ▪ 34. active filter ▪ 35. implement ▪ 36. magnitude ▪ 37. cascade ▪ 38. cut-off
n. 常数 n. 偏置，偏压 n. 无源滤波器 n. 有源滤波器 v. 实现 n. 大小，幅度 v. 级联 adj. 截止的
集成电路 n. 放大器 n. 元件 v. 耦合 n. 晶体管 n. 硅 v. 封装 n. 增益 n. 性能

1、Xiao Wang’s father
has died for ten years .
X
2、Xiao Li has joined the army X
for ten years.
Unit 2
现在完成时与一般过去时 的区别：
(一)现在完成时强调过去发 生的动作对现在产生的结果 或影响，
或者表示过去发生的动作一 直延续到现在，而一般过去 时则仅表示动作发生在过去， 不强调与现在的关系。 例如：
5、He has not finished his homework yet.
Unit 3
现在完成进行时
Ⅰ.一.概念： 表示动作从过去某一时间
开始，一直持续到现在，并 还在继续进行。
二.构成： have/has + been + 现在分词
三.举例： 1 、 It has been raining for three hours.
(六）间接引语 (七）冠词的用法 (八）可数名词与不可数名词
三、考试：
I 听力部分（15分）
(一)听9个简短对话 （只放一遍）:
1 、 What are they talking about?
2 、 What’s the relationship between the two speakers?
1 、 Li Ping has been an engineer since 1990.
2、 I have already bought a new bike.
3、We have been very busy these days.
4、We were very busy yesterday evening.
二、构成：