人教版（2019）选择性必修第二册 Unit1 Science and Scientists Build up Your Vocabulary 名师课件(共16张PPT)

(共16张PPT)
Build up Your Vocabulary
-How to grasp the meaning of words
the longest English word
pneumonoultramicroscopicsilicovolcanoconiosis
/nju m .n l.tr .ma .kr sk p. k s l. .k .v l.ke .n .k n.i .s s/
scopic-
silico-
-osis
ultra-
micro-
coni-
volcano-
pneumono-
affixes
of lung
to an extreme degree
small
of viewing or observing
of silicon 硅的
mountain releasing lava and ash
of dust
a state of disease
a lung disease caused by inhaling very fine ash and sand dust
肺尘病
Affix Meaning Examples change
prefix re-
dis-
micro-
trans-
Affix Meaning Examples change
suffix -ory
-ion
-ial
-ology
What do these affixes mean
Affix Meaning Examples change
prefix re-
dis- micro- trans- What do these affixes mean
again
not
small
complete change; through, across
reunite, revise, recover, react, recall
discover, disappear, dislike, disable
microscope, microwave, microphone
transform, transplant, transport
meaning
Affix Meaning Examples change
suffix -ory
-ion -ial -ology What do these affixes mean
of or relating to
action or process
having the characteristics of
a branch of knowledge
contradictory; advisory;compulsory;
infection, contribution, extinction, reaction...
substantial, financial, official, commercial
epidemiology, biology, physiology
part of speech
Tip1: to grasp the meaning based on affixes and roots.
find as many collocations as possible
subscribe to
blame… for
link ... to ...
suspect ... of ...
Tell the meaning of following underlined phrases.
1. Millions of people subscribe to this online music service.
2. John Snow subscribed firmly to the belief that cholera was caused by an infection from germs in food or water.
3. There was no eividence to suggest that the disease was linked to bad air.
4. The hot weather is partly to blame for the water shortage.
5. If a person is suspected of an infection, his/her family members should be put in quarantine.
Tip2: to grasp the meaning of words in collocations.
to pay to receive a product regularly
to agree with
to be connected to
to be responsible for
to believe that something, usually bad, may be true
1. Many scientists ____________________the view that it is human activity that has caused global warming.
2.He was to____________________ the accident because he drove on the wrong side of the road.
3 The man ____________________being behind the robbery was seen crossing the street.
4 Since heart disease is often________________ our lifestyle choices, we need to make healthy living an important part of our lives.
subscribe to suspect sb of sth blame… for sth link sth to sth
subscribe to
blame for
was suspected of
linked to
Practice
Tip2: to grasp the meaning of words in collocations.
1. It is not unusual for an athlete to be well known while he is active, and quickly forgotten when his athletic career is over.
2. I'm sure she'll deal with the changes very well because she's very adaptable.
3. He was ready to serve dinner to his friends when he realized that he had forgotten to turn on the oven and the meat was not cooked yet.
4. He used his great influence to change the thinking of the scientific community on this issue.
5. Scientists have collected more data than expected to prove the theory.
raw a household name substantial statistics handle
raw
statistics
substantial
handle
a household name
Tip3: to grasp the meaning of words with synonyms.
infection multiple decrease severe transform proof blame substantial
blame
infection
multiple
transform
decrease
substantial
proof
severe
Tip4: to grasp the meaning of words in topic-related context.
topic sentence
British scientists believe they may have found a way to fight the common cold. It blocks a key protein in the body cells that is to ________________ for the spread of cold-causing virus. Targeting the host rather than _________________was a bit non-traditional but made sense because it was tricky to target the virus. Cold-causing virus are not only of _______________kinds, they also _______________ rapidly, meaning they can quickly develop resistance to medicine. Researchers are working on making a form of medicine that can be taken directly into one’s lungs, to____________ the chance of side effects. Though these scientists have made _________________ advances in their research, further__________ is needed to make sure such drugs are not so______________ that they harm the body.
difficult to deal with
the disease
evidence
to completely change appearance or character
be responsible for
to reduce
serious
big and considerable
science
&
scientists
fight disease
the common cold
causes
solutions
effects
characteristics
blame
virus
spread
decrease
substantial
side effects
severe harm
multiple
transform
tricky
resistance
target
host and infection
block protein cell
Tip5: to grasp the meaning of words by a mind map.
Summary
Tip1: to grasp the meaning based on affixes and roots.
Tip2: to grasp the meaning of words in collocations.
Tip3: to grasp the meaning of words with synonyms.
Tip4: to grasp the meaning of words in topic-related context.
Tip5: to grasp the meaning of words by a mind map.
-How to grasp the meaning of words
Homework
Make a mind map of vocabulary in this unit.