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Lesson 23 Bird flight 鸟的飞行方法

Lesson 23 Bird flight 鸟的飞行方法

时间:2015-01-21 06:51点击:
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Comprehension  理解

Answer these questions:

1  Why is the albatross described as‘the king of the gliders’?

2  Why does the author single out the swallow for special praise?

Vocabulary  词汇

Refer to the text to see how the following words have been used, then write sentences of your own using these words: infinite (1.1); sufficient sustenance (1.5); harness (1.6); yield (1.6); endowed (1.8); irresistible power (1.9); bore(1.9); like(1.11); utter(1.11); adverse(1.15); omens(1.16)

The paragraph  段落

A  Drawing your information from lines 1-10(‘No two sorts…exhaustion follows.’)write a list of points in note form to answer the following question: How does the flight of an albatross differ from that of a duck?

B  Read lines 12-17 again.(‘The swallow shares…wish it good-morning.’)Then, using the list of points given below, reconstruct the author's description in your own words as far as possible.Do not refer to the passage until you have finished the exercise.

1  Swallow: the good qualities of both schools.

2  Does not tire; has great power.

3  Flies as much as 6,000 miles to and from nesting home.

4  Feeds young in flight.

5  Good progress in adverse conditions.

6  Such birds do us good.

7  No omens----even among superstitious villagers.

C  Write a paragraph of about 200 words on one of the following subjects:

1  The power of flight.

2  Birds.

Key structures  关键句型

A  Supply a, an or the where necessary in the following.Do not refer to the passage until you have finished the exercise:

No two sorts of______ birds practise quite ______ same sort of______ flight;______ varieties are infinite; but______ two classes may be roughly seen.Any ship that crosses ______Pacific is accompanied for many days by______ smaller albatross, which may keep company with______ vessel for ______hour without______ visible or______ more than occasional movement of______ wing.______currents of______ air that______ walls of______ ship direct upwards, as well as in ______line of its course are enough to give______ great bird with______ its immense wings sufficient sustenance and______ progress.______ albatross is______ king of______ gliders, ______class of______ fliers which harness______ air to their purpose, but must yield to its opposition.(11.1-6)

B  Note the form of the verbs in italics:

You may pick them up in utter exhaustion, if wind over the sea has driven them to a long journey.(11.11-12)Complete the following sentences:

1  If you have ever driven at a hundred miles an hour______

2  If you have never been to New Zealand______

3  If you have finished your work______

C  Supply the correct form of the verbs in parentheses.Do not refer to the passage until you have finished the exercise:

The swallow______(share)the virtues of both schools in highest measure.It______(tire) not nor ______(boast) of its power; but______(belong) to the air,______(travel)it may be six thousand miles to and from its northern nesting home,______(feed) its flown young as it______(fly), and (slip)through a medium that______(seem)to help its passage even when the wind______(be)adverse.(11.12-15)

Special difficulties  难点

A  Study the following pairs of words and then write sentences of your own to bring out the difference:

1  quite(1.1)----quiet

I'm quite happy at my new school.

Please be quiet.I can't think with all that noise you're making.

2  wing(1.4)----feather

He has a good collection of butterflies with beautiful markings on their wings.

Old-fashioned quill pens were made from strong goose feathers.

3  course(1.4)----coarse

The ship had been blown off course in the storm.

He wore an old jacket made of coarse cloth.

B  Note how the words sort and kind can be used in the singular and in the plural:

No two sorts(or kinds)of birds practise quite the same sort(or kind)of flight.(1.1)

Write two sentences using the words sort and sorts.

C  Explain the meaning of rough and roughly in these sentences:

1  Two classes may be roughly seen.(11.1-2)

2  The surface of this road is very rough.

3  Roughly six hundred people attended the meeting.

4  Last night the sea was very rough.

D  Write sentences using the following expressions:

keep company with(1.3); as well as(1.4); take off their hats to(1.17).

E  Note the use of good in this phrase:‘a good part of the weight of the bird’(11.8-9).

Write sentences using the following phrases:

a good fifteen minutes; a good twenty miles; a good five hundred people; a good many;a good few

F  Note how such as may be used to introduce an example:

Their humbler followers, such as partridges,…(11.10-11)

Write two sentences using such as in this way.

G  Noth the phrase do us good(1.15).Which of the following words are used with do and which with make: your duty; an excuse; a fortune; wrong; harm; an attempt; a bed; a proposal; sense; a speech; the shopping; a problem; a lesson; a difference; a copy; an announcement; an agreement; some work; a job; money; a mistake; a noise.

With which of the above words would it be possible to use either do or make?

H  Note the phrase: wish it good-morning(1.17).

Write sentences using the following phrases:

wish me luck; wish me well; wish me good-night.

Multiple choice questions  多项选择题

Choose the correct answers to the following questions.

Comprehension  理解

1  The two classes of flight depend on ______.

a.occasional movement and progress

b.wing span and gliding

c.gliding and muscle-power

d.wind currents and machinery

2  The albatross can keep flying for very long periods because it ______.

a.actively uses air movement to stay in the sky

b.it is a very great bird

c.recognizes ships at sea

d.it can glide in any direction, regardless of air currents

3  Ducks can fly in any direction ______.

a.and stay in the air indefinitely

b.but are too heavy to fly for long

c.and uses engine power

d.but can run out of energy

4  The swallow ______.

a.is often greeted by superstitious villagers

b.is good for people

c.combines both forms of flight

d.is an omen of good luck

Structure  句型

5  The albatross ______to yield to the opposition of the wind.(1.6)

a.must

b.could

c.has

d.should

6  The duck comes nearer to the engines ______man has‘conquered’the air with.(11.7-8)

a.where

b.who

c.whom

d.-

7  Partridges ______a like power of strong propulsion.(1.11)

a.contain

b.provide

c.possess

d.display

8  It ______, not does it boast of its power.(1.13)

a.does not tire

b.not tire

c.not tires

d.do not tire

Vocabulary  词汇

9  There is no ______to the variety of flight practised by birds.(1.1)

a.opportunity

b.end

c.point

d.goal

10  The great bird has______ wings.(1.5)

a.broad

b.long

c.huge

d.wide

11  Duck, like pigeons, are ______with steel-like muscles.(1.8)

a.provided

b.gifted

c.talented

d.inherited

12  We no longer look for ______in the way they fly.(11.15-16)

a.guides

b.notices

c.signs

d.signals