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Punctuation I

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Punctuation I Punctuation Punctuation in English writing is like traffic lights and traffic signs. It helps the reader understand what you are writing. – PowerPoint PPT presentation

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Title: Punctuation I


1
Punctuation I
2
Punctuation
  • Punctuation in English writing is like traffic
    lights and traffic signs. It helps the reader
    understand what you are writing. The punctuation
    marks used most commonly in English are
  • Comma (,) ? Period (.)
  • Semicolon () ? Question Mark (?)
  • Colon () ? Exclamation point (!)
  • Apostrophe () ? Quotation mark ()

3
The Comma
  • Use a comma before a coordinating conjunction
    (and, but, or, nor, for, so, yet) when it is used
    to join independent clauses.
  • She looks very young, but she is already in her
    30's.
  • If the two independent clauses are short and not
    likely to be misread, no comma is needed.
  • The plane took off and we were on our way.

4
  • Use a comma after an introductory clause or
    phrase.
  • When Sam looked in the path near the school
    building, he found his lost book.
  • When Mary was ready to eat, her cat jumped onto
    the table.

5
  • Use a comma after an introductory participial
    phrase that describes the noun or pronoun that
    follows.
  • Struggling with large amounts of homework, the
    class feared the exam.
  • Having seen pictures of the beach, the children
    eagerly looked forward to summer.

6
Exercise 1.1 add or delete commas
  • As the concert began we heard a tremendous
    explosion.
  • With their local knowledge and low population
    density the people can fulfill their daily living
    needs by using the natural resources around them.
  • Further the steep topography makes most of the
    land very susceptible to erosion.
  • Beyond these flat riverside areas low nutrients
    shallow soil poor drainage and high rainfall
    limit the development of large plantations.

7
  • Use a comma between all items in a series.
  • I brought my books, papers, and computer to the
    classroom.
  • We will prepare the specimens, conduct the tests,
    and record the data.

8
  • Use a comma between coordinate adjectives not
    joined with and.
  • Same has become a strong, confident, independent
    man.
  • The laboratory is a small, windowless, poorly
    lighted room.
  • The laboratory is a windowless, poorly lighted,
    small room.
  • (Coordinate adjectives can be scrambled.)

9
  • Do not use a comma between cumulative adjectives.
  • Three large gray trucks tooled down the street.
  • (Cumulative adjectives do not modify a noun
    separately.)
  • Three gray large trucks rolled down the street.
  • (Do not scramble cumulative adjectives.)

10
Exercise 1.2 add or delete commas
  • My brother and I found a dead snake picked it up
    and placed it on the teachers doorstep.
  • For breakfast the children ordered rice doughnuts
    with peanut butter and chocolate milk.
  • The region is not suited for large-scale
    agricultural activities such as planting pepper
    coffee cocoa candlenut and rubber or oil palm.
  • An ambulance threaded its way through police cars
    fire trucks and irate citizens.

11
  • Use commas to set off nonrestrictive elements
  • The truck, with its horn blowing loudly, rushed
    through the streets of the city.
  • This research, which I began two years ago, is
    beginning to show some interesting results.
  • (Removing a nonrestrictive element does not
    greatly change the meaning of the sentence.)

12
  • Do not use commas to set of restrictive elements.
  • A laboratory that is well ventilated is needed
    for this type of research.
  • The corner of the laboratory was filled with
    notebooks that dated from ten years ago.
  • The novel The Naked and the Dead was Norman
    Mailers first novel.

13
  • Use commas to set off transitional expressions.
  • However, therefore, moreover, for example, as a
    matter of fact, in other words
  • As a matter of fact, many of the musicians have
    hearing problems
  • Therefore, they frequently need hearing
    assistance.

14
  • If a transitional expression is between
    independent clauses, precede it with a semicolon
    () and follow it with a comma.
  • Natural foods are not always salt free for
    examples, celery contains more salt than most
    people would imagine.
  • The new building is not completed however, this
    classroom is air-conditioned.

15
  • Use commas to set off parenthetical expressions.
  • Evolution, as far as we know, doesnt work this
    way.
  • The fish weighed about five kilograms, give or
    take a few grams.
  • Learning English, unfortunately for students, is
    a complex and frustrating process.

16
  • Use commas to set off absolute phrases.
  • Elvis Presley made music history in the 1950s,
    his records having sold more than ten million
    copies.
  • The weather having become very bad, the airplane
    was unable to take off.
  • (Of course, these two sentences could be written
    in another way)

17
  • Use commas to set off contrasting elements.
  • Sharp contrasts begin with words such as not,
    never, and unlike.
  • Unlike Robert, Celia loved speech contests.
  • We use alcohol, never water, to sterilize the
    instruments.

18
  • Use commas to set off direct address, question
    tags, and interjections.
  • Forgive us, Professor, for being late in sending
    our homework.
  • Yes, but dont do it again.
  • This is the third time you have been late, isnt
    it?
  • Well, we sometimes have lots of other homework to
    do.

19
  • Use commas to set off direct quotations.
  • William Shakespeare, in Twelfth Night, said
    God give them wisdom, that have it and those
    that are fools, let them use their talents.
  • I know not what course other may take, but, as
    for me, give me liberty or give me death, said
    Patrick Henry before the American Revolution.

20
  • Use commas to set off dates, addresses, titles,
    and numbers.
  • The final examination will be on June 22, 2007.
  • C. H. Wong, Ph.D., has been appointed to be the
    President of Academia Sinica.
  • The teacher was born in Hualien, Taiwan, in 1960.
  • The total price is NTD 23,456.

21
  • Use commas to avoid confusion.
  • To err is human to forgive, divine.
  • Of all the baseball games we played, this was the
    worst.
  • All of the catastrophes that we feared might
    happen, happened.

22
Exercise 1.3 add or delete commas
  • We will do our work in the laboratory that is on
    the third floor.
  • We will do our work in the chemistry laboratory
    which is on the third floor.
  • The surprising thing however was the items that
    sold most quickly.
  • Whenever the weather is rainy they wear raincoats
    and boots which keep them dry.
  • Although, the air was warm, the water was too
    cold for swimming.
  • Come to think of it more than forty years have
    passed since then.

23
The Period
  • Use a period to end a sentence.
  • Bill asked whether our class will be cancelled
    tomorrow.
  • The period is a red light or stop sign.
  • The period is the most powerful piece of
    punctuation at your disposal. In many scientific
    documents periods are not used often
    enough. Michael Alley The craft of Scientific
    Writing

24
  • Use a period to improve the flow of writing.
    Sometimes, there are too many ideas packed into
    one sentence. Use periods and shorter sentences
    as follows to improve the flow and understanding.

1. For temperatures above 1100K, the four fuels
had about the same ignition delay when the
ignition delay was defined as the time to recover
the pressure loss from fuel evaporation, in spite
of the large variations in ignition delay among
the four fuels at lower temperatures. 2.
Ignition delay is the time required to recover
the pressure loss from fuel evaporation. Despite
the large variations in ignition delay at lower
temperatures, the four fuels had about the same
ignition delay for temperatures above 1100K.
25
  • Use a period in conventional abbreviations.
  • Mr. (mister) Mrs. (misses)
  • Dr. (doctor) Ph.D. (Doctor of Philosophy)
  • e.g. (exempli gratia) etc. (et cetera)
  • i.e. (id est) p.s. (post scriptum)
  • Sometimes the period is omitted in an
    abbreviation using capital letters
  • AM PM
  • BA MA
  • Do not use a period in abbreviating names of
    organizations.
  • UN USA WHO
  • IBM FAO ILO

26
Taipei Basin
Bonne soiree Bon soir
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