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AdeterminerUS /ə/
used before a singular noun to mean one of a group, when it is not a particular one
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
AEROPLANE
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
air
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
AlthoughnounUS /ˈalthough/
a story-specific word describing an important person, object, action, or idea in this passage
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
andeterminerUS /æn/
the form of “a” used before a word that begins with a vowel sound
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
andconjunctionUS /ənd/
used to join words or parts of a sentence that go together
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
areauxiliary verbUS /ɑːr/
the form of “be” used with you, we, they, or a plural noun
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
asconjunctionUS /æz/
at the same time that; because; in the way that
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
aviator
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
away
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
bank
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From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
beautiful
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
beforeprepositionUS /bɪˈfɔːr/
earlier than; in front of
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
best
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
blindly
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
byprepositionUS /baɪ/
showing who or what does the action
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
cannot
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
clouds
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From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
constantly
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
course
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
craftnounUS /kræft/
a boat or ship in this chapter’s sailing situation
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
currents
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
deep
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
driven
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From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
ebbing
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
ever
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
FLIES
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
flowing
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
formed
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
frail
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
giddy
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
great
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
hepronounUS /hiː/
a man, boy, or male animal already mentioned, as the subject
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
heaps
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
high
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
hisdeterminerUS /hɪz/
belonging to a man, boy, or male animal already mentioned
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
how
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
inprepositionUS /ɪn/
inside something, or within a place, period, or state
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
isauxiliary verbUS /ɪz/
the form of “be” used with he, she, it, or a singular noun
From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
keep
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
know
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
level
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
machine
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
maymodal verbUS /meɪ/
used to say something is possible, or to give permission
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
mountain
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
much
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
mustmodal verbUS /mʌst/
used to say something is necessary, or almost certainly true
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
navigate
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
ofprepositionUS /ʌv/
belonging to, or connected with, somebody or something
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
orconjunctionUS /ɔːr/
used to join alternatives or possibilities
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
peaks
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
piling
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
plains
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From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
problem
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
ride
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
right
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
rough
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From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
scenery
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
sea
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
see
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From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
shifting
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
shows
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From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
side
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From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
slipping
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
steer
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
thatconjunctionUS /ðæt/
used to introduce what somebody said, thought, or felt
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
THEdeterminerUS /ðə/
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
themselvespronounUS /ðemˈselvz/
used when the people doing the action are also its object
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
There
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
thesedeterminerUS /ðiːz/
the plural of “this”: the people or things near, or just mentioned
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
theypronounUS /ðeɪ/
the people, animals, or things already mentioned, as the subject
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
throughprepositionUS /θruː/
from one end or side of something to the other
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
toparticleUS /tuː/
used before the base form of a verb to make the infinitive
From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
tumblingnounUS /ˈtumbling/
a story-specific word describing an important person, object, action, or idea in this passage
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
uncharted
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
unknown
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
up
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading The great problem is to ride the shifting air currents and keep the machine right side up.
uponprepositionUS /əˈpɑːn/
a formal word for “on”
From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
valleys
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
venture
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
vortices
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
wepronounUS /wiː/
the speaker together with one or more other people
From this reading Although we cannot see the air currents, we know that they are constantly ebbing and flowing, piling themselves in great heaps, or slipping away in giddy vortices.
whichpronounUS /wɪtʃ/
used to introduce a clause giving more about a thing just mentioned
From this reading There is much beautiful scenery, high mountain peaks, deep valleys, and level plains formed by these ever shifting air currents through which the aviator must steer his course blindly as best he may.
whirling
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
WHY
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From this reading WHY THE AEROPLANE FLIES The aviator must venture in his frail craft upon an unknown and uncharted sea.
wind
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From this reading A great bank of whirling clouds driven before the wind shows how rough and tumbling a sea he must navigate.
