高中英语人教版必修二Unit3课文内容

必修二Unit3 课文内容

1.I developed very slowly and it took nearly two hundred years before I was built as an analytical

machine by Charles Babbage.

本句是由并列连词and 连接的并列句。and 后的句子中

before 引导时间状语从句。△

before 引导时间状语从句

before 引导时间状语从句时可以根据语境译作“过了,, （时间）才,, ”，“还没来得

。,, 就,, ”或“在,, 之前”及

△before 常用于以下句型中：

⑴It was + 时间段+ before... “过了,, 才,, ”，从句常

用一般过去时。

，从句常用一般过去时。,, ”⑵It was not long before ... “不久就

”，从句常用一般现在时。⑶It will not be long before... “不久就会,,

”,, 时间段+ before... “要过,, 才⑷It will be +，从句常用

一般现在时。It was five days before he came back.It was not long before he sensed the danger of the position.It will

not be long before they understand each other.

It will be half a year before you graduate from the school.练习：1. It was evening ______ we reached the little town of Winchester. A. thatB. untilC. sinceD. before 2.Scientists say it may be five or six years ______ it is possible to test this medicine on human

patients.

3.Someone called me up in the middle of the night, but they hung up ______ I could answer

the phone.

A. as

B. since

C. until

D. before

4.He made a mistake, but then he corrected the situation

______ it got worse.

A. untilC. before

B. whenD. as

5.It was some time _____ we realized the truth.

A. whenD. beforeC. since

B. until

6.The American Civil War lasted four years _____ the North won in the end.

A. afterC. whenD. then

B. before

–Why didn ' t you tell him about the meeting?7.

–He rushed out of the room _____ I could say a word.

8. –How long do you think it will be______ China sends a manned spaceship to the moon?–Perhaps two or three years.

2.Anyhow, my goal is to provide humans with a life of high quality.

本句为简单句。my goal 为主语；动词不定式短语to provide... 为表语；of high quality作

a life.定语，修饰

名词”结构△“of +

of +“名词”结构可在句中作表语、定语和补语。该结构可分为两类：

value, use, of + “⑴名词有相应的形容词时，这类名词有名词”可转化为相应的形容词。等词修饰。important, help, interest,

benefit 等。它们可用no, some, any, little, much, great

They are of great help ( = very helpful) to English learners.

In fact, sports can be of great benefit (=very beneficial) to our health.

⑵名次没有相应的形容词时，“of +名词”没有相应的形容词形式。常见的名词有age,

size, color, weight, quality, height, price, opinion, shape, kind, way等，这些名词前的限定词

等。a, an, the same常为

Mr. Smith, my teacher, is of the same opinion.We are of the same age.

Tom is of a different way of thinking.练习：This book by Tony Garrision is ______ for our course.⑴–But I think his latest one is better worth reading.–

B. of no useD. great usefulA. useless

C. of great use

⑵完成句子

①这项工程对每个人都大有好处。