高中英语人教版必修二Unit3课文内容知识分享
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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 an alytical
machi ne 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 及……就……”或“在……之前”。
They walked about 30 miles before they saw a village.
We had n 'r un a mile before he felt tired.
△ 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。
⑵It was not long before ... “不久就 . ”,从句常用一般过去时。
⑶It will not be long before... “不久就会 ...... ”,从句常用一般现在时。
⑷It will be + 时间段+ before... “要过 ........ 才 ... ”,从句常用一般现在时。
It was five days before he came back.
It was not long before he sen sed the dan ger of the positi on.
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 tow n of Win chester.
A. that
B. until
C. since
D. before
2. Scientists say it may be five or six years ________ it is possible to test this medicine on
huma n patie nts.
A. since
B. after
C. before
D. whe n 3. Some one called me up in the middle of the ni ght, but they hung up ____ I could an swer
the pho ne.
A. as
B. since
C. un til
D. before 4. He made a mistake, but the n he corrected the situati on ___ it got worse. A. un til
B. whe n
C. before 5. It was some time____ we realized the truth. A. whe n
B. un til
C. since 6. The America n Civil War lasted four years ____ A. after B. before C. whe n 7. - Why didn ' t you tell him about the meeting?
-He rushed out of the room _____ I could say a word.
A. before
B. un til
C. whe n
D. after
8. -How long do you think it will be _____ China sends a manned spaceship to the moon?
-Perhaps two or three years.
A. whe n
B. un til
C. that
D. before
2. An yhow, my goal is to provide huma ns 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
定语,修饰a life.
△ “ of +名词”结构
“ 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:
D. as D. before the North won in the end.
D. then
⑴名词有相应的形容词时,“of +名词”可转化为相应的形容词。这类名词有value, use, importa
nt, help, in terest, ben efit 等。它们可用no, some, any, little, much, great 等词修饰。
They are of great help ( = very helpful) to En glish lear ners.
In fact, sports can be of great ben efit (=very ben eficial) 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常为a, an, the same等。
Mr. Smith, my teacher, is of the same opinion.
We are of the same age.
Tom is of a differe nt way of thinking.
练习:
(1) -This book by Tony Garrision is ______ for our course.
-But I think his latest one is better worth readi ng.
A. useless
B. of no use
C. of great use
D. great useful
⑵完成句子
①这项工程对每个人都大有好处。
This project is _____________________________ (be nefit) to every one.
②同时,性别差异的主题也很有趣。
Also, the topic of sex differe nces is ___________________________ (in terest).
③在这个地区,我们学校的教学质量是最好的。
Our school educati on is _______________________ (quality) in this area.
3. As time sent by I did research into how to make my radio.
本句中as time sent by为as引导的时间状语从句,how to make my radio作介词into的宾语。
△ as引导的时间状语从句
⑴as引导时间状语从句,意为“随着,当……”,强调主从句的谓语动作同时发生。
As shots rang, people could be see n running out of the build ing.
⑵as引导比较状语从句,意为“像……一样”。
He is as old as I (am).
⑶as引导方式状语从句,意为“照……的方式”。
When in Rome, do as the Roma ns do.
⑷as引导原因状语,意为“因为,由于” 。”
As she has no car, she caritget there easily.
⑸as引导让步状语从句,意为“尽管,虽然”,此时从句需用部分倒装结构。
Happy as/though they were, there was someth ing miss ing.
Child as/though he is, he knows a lot.
练习:
(1) Stupid ______ i t sounds, I was so in love with her that I believed her.
A. although
B. as
C. while
D. whe n
⑵ Lessons can be learned to face the future, ______ history cannot be changed.
A. though
B. as
C. since
D. uni ess