Unit3 Science versus nature

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Unit3 Science versus nature
Word power
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Prefixes and suffixes
Organs of the body
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Prefixes and suffixes
appear, novel, regular, respect
We are going to have some questions. Please use
these words to help you, but you need to add some
letters to the words first.
1)You cannot find your new pen. What happened
to your pen?
It disappeared
2) Many people respect Mr. Li and think he is a
good man. He helps people out and is a good
citizen and friend. So can you find a word to
describe Mr. Li?
Respectable
3) Miss Wang has published several books. She
loves her job writing novels. So what is Miss
Wangs occupation(??)?
She is a novelist
4) You cannot find the order of the numbers in a
group of members. So can you find a word to
describe the order of the numbers?
irregular
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independence
ence
depend
in
prefix(??)
suffix(??)
root (??)
Prefix a group of letters that is added to the
beginning of a word to change its meaning.
Suffix a letter or a group of letters added to
the end of a word to make a different word.
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Attention !
Usually a prefix will change the meaning of word,
while a suffix will change the part of speech of
a word.
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Sometimes you can guess what a word means by
looking at its prefix or suffix. Look at the
examples and work out the meanings.
Prefix Example Meaning





anti-
anti-cloning, anticancer
against, opposed to
dis-
disappear, disagree
not, apposed of
un-
unfair, unwilling
incorrect, incomparable
in- il- im- ir-
illegal, illogical
not, without
immoral, immodest
irresponsible, irregular
pre-
preview, preserve
early, before
pro-
pro-cloning
in favour of, supporting
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re-
recreate, repeat, renew
again
Some other commonly used prefixes
Prefix Example Meaning









de-
decompose, declassify
apart, from
mal-
maltreatment, malnutrition
badly, ill
non-
not
non-smoker, non-alcoholic, non-profit
between
inter-
international, interaction, interrupt
far off
tele-
telescope, telegram, telecommunication
trans-
across
transport, translate, transnational
mis-
misunderstand, mislead, misdeed
wrong
sub-
subtitle, subway, submarine
under
over-
overeat, overwork, overact
too much
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tri-
three
triangle, tricycle, tricolor
autobiography, autoalarm, automobile
auto-
self
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Suffix Example Meaning






worthy of, able to be
-able
comfortable, noticeable
full of, characterized by
-ful
cheerful, thoughtful
someone who does something
-ist
scientist, novelist
hopeless, aimless
-less
without
indicate a state or condition
-ment
agreement, treatment
indicate a quality, state or character
-ness
dryness, madness
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Some other commonly used suffixes









-al
cultural, national, original
of or concerning
action or condition of
-ion
invitation, competition, protection
hardship, scholarship, relationship
-ship
state of being, skill
-dom
freedom, kingdom,
condition or state of
-ish
of the nature of
childish, selfish
-proof
waterproof, fireproof, soundproof
protect against
-en
widen, sharpen, shorten
make or become
-ward
eastward, homeward, backward
in the direction of
-like
womanlike, childlike
similar to
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Do you think we should protect nature? Complete
what an environmentalist is saying below. Use the
words from the box.
disrespect, hopeless, illegal, uncertain,
understandable
I think cutting down trees should be
made(1)_______ and tighter laws should be
introduced. So many people are showing
their(2)________ for nature they dont seem to
care that they are destroying the environment.
Sometimes I think we are fighting a(3)________
battle against people who just wont listen. I
know scientists have worked hard to achieve
scientific breakthrough but its(4)___________
whether theyll succeed totally.Although
its(5)__________ that they want to advance
technology, I think some things are best left the
way they are.
illegal
disrespect
hopeless
uncertain
understandable
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Organs of the body
lungs
heart
liver
stomach
kidneys
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Key to Exercise B

• Brain (2) heart
• (3) liver (4) lungs
• (5) stomach (6) kidneys

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Homework
1.Complete Part C on page 47 in pairs or groups.
2.Read the article in Part A on page 113 and do
Par B on the same page.