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課程內容
高中英語復習課《偉大的科學家 Unit 1 Great scientists》（必修5）
A summary of the story
John Snow wanted to find the cause of the cholera.He behaved that people became ill after eating infected food.He used the next outbreak of cholera to test his idea.He studied a small area of honses which got their water from the same pump.Many people in the area died.John Snow showed that this was because the water in the pump was infected.He showed that cholera chould be detected if people drank clean water.
Analysis of the reading passage:
There are two chies to understand this reading passage.First,the reading passage is written as stage in an experiment.Second,it introduces us a story about how John Snow discovers and controls the disease cholers!So we must understand both the scientific methods and the plot of the story.
The plot of the story
Event 1. An outbreak of cholera hit London in1854.
Event 2.John Snow began to test two theories.
Event 3.John Snow investigated two streets where the outbreak was very severe.
Event 4.John Snow marked the deaths on a map.
Event 5.He found that most of the deaths were near a water pump.
Event 6.He had the handle removed from the water pump.
Event 7.He announced that the water carried the disease.
Event 8.King Cholera was defeated.
Words expressions structures
1.But he became inspired when he thought about helping ordinary people exposed to cholera.
但當他一想到要幫助那些得了霍亂的普通老百姓時，他就趕到很振奮。
exposed to 是過去分詞作定語，相當于一個定語從句，修飾ordinary people.which are exposed to....
Mr.White showed her students some old maps(C)from the library.
A .to borrow     B to be borrowed   C borrowed   D borrowing
句意：懷特夫人把從圖書館借來的幾張舊地圖展示給學生們看。考查非謂語動詞the map和borrow之間是邏輯上的被動關系，而且表示已經發生的動作，因此用過去分詞作定語。
expose:
2.Neither its cause nor its cure was understand.So many thousands of terrified people died every time there was an outbreak.
人們既不知道它的病源，也不了解它的治療方法，所以每次爆發霍亂的時候，就有大批驚恐的百姓病死。
(1)neither...nor...既不...也不...，連接兩個主語時，謂語動詞的單復數要遵循就近原則。
相近的結構還有or,either...or...,not only....but also...
(2)cure vt.n.治愈；治療（同義詞heal)
(a) cure sb of sth   治療...
這種藥應該能治愈你的感冒
The machine should cure you of your cold.
(b)cure for+n.
治療這種疾病的特效藥還沒有被發現。
A certain cure for this illness is not found vet.
(3)every time,each time ,the first time,the last time 等特殊的名詞或副詞短語有時可以起到連詞作用，用來引導時間狀語從句。另外the moment,the minute,the second,immediately,instantly等可以引導時間狀語從句，意為“一....就...”
3.The second suggested that people absorbed this disease into their bodies with their meals.From the stomach the disease quickly attacked the body and soon the affected person died.第二種看法是吃飯的時候人們把這種病毒引入體內，病從胃里發作而迅速殃及全身，患者就會很快死去。
(1)句中suggest的意思是“暗示，（間接）表明”，要用陳述語氣。當“建議”講時，其后的賓語從句常用suggest that sb (should)+do類型的虛擬語氣。
(3)affected person 意為“被感染的了”affected 在句中作定語，表示被動含義。
effect  n.影響，效果
【觀察】閱讀下列句子，觀察absorb在句中的用法。
 1.Cotton golves absorb sweat and black cloth absorbs light.
vt. 吸收（液體、氣體、光、熱等）
2.Clever children absorb knowledge easily.
vt. 汲取、理解、掌握知識
3.This work had absorbed him for weveral years.
vt 吸引（注意力、精力等）
4.The boy was absorbed in the book and paid no attention to what was going on around him.
用于be absorbed in 集中注意力，全神貫注于...
4.It seemed that the water was to blame.
看來霍亂的流行要歸罪與飲用水了。
blame v.責備；譴責；把...歸咎于   n.過失，責備
常用結構：
blame ab./sth. for sth.  因...責備...
blame sth on sb./sth.   把...歸咎于...
be to blame (for sth)    應（為...）承擔責任；該（為....）受責備（主動表被動)
bear/take the blame   承擔責任
put/lay the blame on   怪在...身上
警察把那起交通事故歸咎于他的粗心駕駛。
The police blamed the traffic accident on his careless driving.
(B)for the breakdown of the school computer netbook,Alice was in low spirits.
A Blaming   B Blamed   C To blame   D To be blamed
句意：由于被指責要對學校的計算機網絡故障負責，愛麗絲情緒很低落。Blame:sb/sth is responsible for sth bad把...歸咎于。題中主語與blame之間構成被動關系。
5.A woman,who had moved away from Broad.Street,liked the water from the pump so much that she had it delivered to hei house every day.有一位婦女是從寬街搬來的，她特別喜歡那里的水，每天都派人從水泵打水運到這里來。
have+賓語+done  讓賓語被做，遭遇
have+賓語+do  讓賓語去做
have+賓語+doing 讓賓語一直做
Jenny hopes that Mr.Smith will suggest a good way to have her written English(A) in a short period.
A inproved   B improving   C to improve   D improve
賓語和賓補之間是被動關系
過去分詞的定義
過去分詞只有一種形式沒有主動與被動，“體”式（一般式；進行式；完成式）的變化：規則動詞由動詞原形加詞尾- ed構成；不規則動詞的過去分詞沒有統一的規則要求，要一一記住。
理解過去分詞概念上的兩層含義
過去分詞表示被動含義和完成含義
1.及物動詞的過去分析與句子的主語時被動關系表示主語的狀態，不但表示被動還表示已經完成了。
The cup is broken.茶杯破了
a damaged bridae   一座被毀壞的橋
2.不及物動詞的過去分詞與句子的主語時主動關系表示主語的狀態，只表示動作的完成
He is retired.他已退休 fallen leaves  落葉
過去分詞功能概述
1.構成謂語
a 和have-道構成完成時態
I haven't been out much recently.
b.和be-道構成被動語態
The children were well looked after.
2.形容詞、副詞化
作表語、定語；作賓補構成符合賓語：作狀語
過去分詞的形容詞化
所謂過去分詞形容詞化，就是說過去分詞具有了形容詞的性質，那么過去分詞就能夠在句子中充當定語和表語。
一、過去分詞作定語時，常指已完成的動作且與所修飾詞之間被動關系。一般來說，如果是單個的過去分詞，則放在所修飾詞錢，若是一個過去分詞短語，則放在所修飾詞后。
二、過去分詞作表語時，往往表示一種狀態，而被動語態則表示一個動作。
過去分詞作定語
過去分詞作定語，一般表示分詞的動作與被修飾的詞之間存在著邏輯的被動關系，且表示該動作已經完成。如：
Most of the artists invated to the party were from South Africa.
The computer center opened last year is very popular among the students.
單詞過去分詞作定語，通常置于被修飾詞的前面，而過去分詞短語作定語，則需置于被修飾詞之后。如：
The injured workers are now being taken good care of in the hospital.
The workers injured in the accident are now being taken goos care of in the hospital.
過去分詞作表語
過去分詞作表語與位于動詞構成系表結構，表示主語的性質，特征和狀態。如：
She was dressed in her finest skirt at the party that night.
The hill is covered with red flowers and green grass.
過去分詞作表語時不要與被動語態混為一談：前者表示主語的特點或所處的狀態，其中的過去分詞相當于形容詞，而被動語態則強調主語所承受的動作。試比較：
Your composition is well written expect for some spelling mistakes.(系表結構）
The composition was written by a senior student of Grade Three(被動語態）
summary
通過本節課，我們共同學復習了第一單元的課文和語法，在理解過去分詞由于具有了形容詞的性質，其在句子中就能夠作定語和表語這一特質的同時，我們時刻要注意，過去分詞屬于非謂語動詞一類，仍然表示被動或完成的含義，這是理解其意義和用法的關鍵。