第二十二單元 篇章的統一性、支撐性、連貫性和一致性
22．1 篇章的統一性（Unity of an Essay）
篇章的統一性是指各推展段落都必須緊扣主題思想，不包含與主題思想無關的任何部分。如果包含與主題思想無關的部分或出現多層意思，就會導致主旨不清，思路混亂。
22．2 篇章的支撐性（Support of an Essay）
只有通過具體的實例、事實、細節或事件對篇章中的主題思想加以充實和發揮，才能使文章的主題更加明確具體。例如：在Unit 21-2范文中的四個Supporting Paragraphs（SP1，SP2，SP3，SP4）都是通過具體的實例、細節，來進一步明確本篇文章的主題思想—To be successful in a job interview，you must demonstrate cetain personal and professional qualities．
22．3 篇章的連貫性（Coherence of an Essay）
篇章的連貫性是指句子與句子，段落與段落的排列組合必須合乎邏輯（意連）；句子間以及段落間的過渡必須自然流暢（形連）。篇章的意連有三種：a．Time Order or Chronological Order（時間順序）；b．Space or Spatial Order（位置或空間順序）；c．Logical Order（邏輯順序）。其中，邏輯順序又可分為三種：
1）Order of Importance（重要性順序）
2）Specific-to-General（從具體到總論）
3）General-to-Spacific（從總論到具體）
例如，在Unit 21中的Model Essay中，作者就是以General-to-Specific的邏輯順序來推展文章主題的。作者先是給出一個Topic Sentence，然后通過四個具體的“You should……”對主題加以支撐、充實，從而達到了意連。
而轉換此詞語（Transitions）則是篇章形連的重要手段。
Unit 21中的Model Essay也正是通過許許多多的轉換詞語使文章達到了自然流暢。以下讓我們就此范文的首段（TP）和第一支撐段（SP1）為例，來看看轉換詞語承上啟下之作用。
22．4 篇章的一致性（Sentence Skills in an Essay）
若要讀者完全、正確地領會我們所要表達的思想內容，在寫作篇章時，我們必須簡潔明白，寫出合乎語法規范的句子，正確的語法包括（nouns；pronouns；verb tenses；fragments（不完整的句子）；dangling modifiers（垂懸修飾語）；run-ons（用錯逗號的句子或亂加從句的冗長句子），etc．
Exercise 22-1
Directions：Two versions of a passage are given below．Both are unified，supported，and organized，but one version communicates more clearly and effectively its ideas than the other．Which one，and why？
There are times when people are so tired that they fall asleep almost anywhere．For example，there is a lot of sleeping on the bus or train on the way home from work in the evenings．A man will be reading the newspaper，and seconds later it appears as if he is trying to eat it．Or he will fall asleep on the shoulder of the stranger sitting next to him．
Another place where unplanned naps go on is in the lecture hall．In some classes，a student will start snoring so loudly that the professor has to ask another student to shake the sleeper awake．Amore embarrassing situation occurs when a student leans on one elbow and starts drifting off to sleep．The weight of the head pushes the elbow off the desk，and this momentum carries the rest of the body along．The student wakes up on the floor with no memory of how he got there．
The worst time to fall asleep is when driving a car．Police reports are full of accidents that occur when people fall asleep at the wheel and go off the road．If the drivers are very lucky，they are not seriously hurt．One woman's car，for instance，went into the river．She woke up in four feet of water and thought it was raining．When people are really tired，nothing will stop them from falling asleep—no matter where they are．
（1）There are times when people are so tired that they fall asleep almost anywhere．（2）For example，on the bus or train on the way home from work．（3）A man will be reading the newspaper，seconds later it appears as if he is trying to eat it．（4）Or he will fall asleep on the shoulder of the stranger sitting next to him．
（5）Another place where unplanned naps go on are in the lecture hall．（6）In some classes，a student will start snoring so loudly that the professor has to ask another student to shake the sleeper awake．（7）A more embarrassing situation occurs when a student leans on one elbow and starting to drift off to sleep．（8）The weight of the head push the elbow off the desk，and this momentum carries the rest of the body along．（9）The student wakes up on the floor with no memory of how he got there．
（10）The worst time to fall asleep is when driving a car．（11）Police reports are full of accidents that occur when people conk out and go off the road．（12）If the drivers are lucky they are not seriously hurt．（13）One womans car，for instance went into the river．（14）She woke up in four feet of water．（15）And thought it was raining．（16）When people are really tired，nothing will stopthem from falling asleep—no matter where they are．
Exercise 22-2
Directions：Compare the second version with the first one，and choose the correct answers from the following choices（The exercise is mainly for sentence skills）
1．In sentence（2）， 2．In sentence（3），
a．missing comma a．run-on
b．missing apostrophe b．sentence fragment
c．sentence fragment c．mistake in subject-verb agreement
d．dangling modifier d．irregular verb mistake
3．In sentence（5）， 4．In sentence（7），
a．sentence fragment a．misplaced modifier
b．spelling error b．dangling modifier
c．run-on c．mistake in parallelism
d．mistake in subject-verb d．run-on
agreement
5．In sentenc（8）， 6．In sentence（11），
a．nonstandard English verb a．irregular verb mistake
b．run-on b．sentence fragment
c．comma mistake c．slang phrase
d．missing capital letter d．mistake in subject-verb agreement
7．In sentence（12）， 8．In sentence（13），
a．missing apostrophe a．mistake in parallelism
b．missing comma b．irregular verb mistake
c．irregular verb mistake c．missing apostrophe
d．sentence fragment d．missing capital letter
9．In sentence（13）， 10．In sentence（15），
a．missing comma around an a．missing quotation mark
interrupter
b．dangling modifier b．irregular verb mistake
c．run-on c．sentence fragment
d．cliché d．mistake in pronoun point of view
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