Unit1 Water单元语法填空专项训练（含答案解析）—沪教版（五四学制）八年级英语上册

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沪教版（五四学制）八年级英语上册Unit1 Water单元语法专项训练
用括号里单词的正确形式填空。
If you________ (boil) the water, it________ (turn) into steam.
The water________ (pollute) seriously if factories________ (dump) waste water into rivers without treatment.
Unless we________ (take) action to save water, we________ (face) a serious water shortage in the future.
When the temperature________ (drop) below zero, the water in the lake________ (freeze).
As soon as the rain________ (stop), we________ (go) to clean up the river banks.
Water________ (be) used in many ways in our daily life, such as cooking, cleaning and________ (irrigate).
If you________ (leave) the water running while brushing your teeth, a large amount of water________ (waste).
The water cycle________ (include) evaporation, condensation and precipitation, which________ (be) very important for the balance of the ecosystem.
When the sun________ (shine) on the ocean, the water________ (evaporate) and forms clouds.
Unless we________ (protect) our water resources, many species________ (lose) their habitats.
If we________ (recycle) water, we________ (save) a lot of fresh water.
As long as we________ (keep) the water clean, it________ (provide) us with a good living environment.
When it________ (rain) heavily, the river________ (rise) quickly and may cause floods.
Water________ (be) composed of hydrogen and oxygen, and it________ (play) a vital role in all living organisms.
If we________ (not value) water, we________ (suffer) from its shortage someday.
The water in the reservoir________ (supply) the city with drinking water if it________ (be) treated properly.
Once the water________ (be) polluted, it________ (take) a long time to make it clean again.
When the ice________ (melt), it________ (turn) into water.
Unless we________ (reduce) water pollution, the quality of our drinking water________ (decline).
If you________ (pour) oil into water, it________ (float) on the surface.
Water________ (exist) in three states: solid, liquid and gas, and the state it________ (be) in depends on the temperature.
As soon as the water________ (reach) 100 degrees Celsius, it________ (begin) to boil.
When the water________ (flow) through the pipes, it________ (make) some noise.
Unless we________ (educate) people about water conservation, they________ (not realize) the importance of saving water.
If we________ (use) water - saving appliances, we________ (cut down) our water consumption.
The water treatment plant________ (process) the wastewater before it________ (be) released into the river.
When the water________ (be) too dirty, it________ (not be suitable) for any use.
Once the water source________ (be) contaminated, the whole community________ (be affected).
If you________ (mix) salt with water, the water________ (become) salty.
Water________ (be) essential for agriculture, and without it, crops________ (not grow).
As long as we________ (monitor) the water quality regularly, we________ (be able to) ensure its safety.
When the water level________ (drop) in the well, we________ (have to) dig deeper.
Unless we________ (enforce) strict laws on water protection, water pollution________ (continue) to be a serious problem.
If we________ (collect) rainwater, we________ (have) an additional source of water.
The water in the swimming pool________ (be changed) regularly to keep it clean if people________ (use) it frequently.
Once the water________ (evaporate) from the surface, it________ (form) clouds in the sky.
When the water________ (be) frozen, its volume________ (expand).
Unless we________ (raise) people's awareness of water conservation, they________ (keep) wasting water.
If you________ (put) a plant in water, it________ (absorb) water through its roots.
Water________ (be) used to generate electricity in hydro - power stations, which________ (be) a clean energy source.
As soon as the water________ (cool) down, it________ (condense) into small droplets.
When the water________ (run) out of the faucet, we________ (should) turn it off immediately.
Unless we________ (manage) our water resources efficiently, we________ (run) into trouble in the future.
If we________ (plant) more trees, they________ (help) to conserve water in the soil.
The water in the lake________ (become) clearer if the local government________ (take) measures to reduce pollution.
Once the water________ (be) purified, it________ (can be used) for drinking.
When the water________ (be) heated, it________ (give off) steam.
Unless we________ (stop) littering in rivers, the water________ (become) more polluted.
If you________ (add) some sugar to water, the water________ (taste) sweet.
Water________ (be) a precious resource, and we________ (must) do our best to protect it.
As long as we________ (carry out) water - saving campaigns, more people________ (get) involved in saving water.
When the water________ (be) used for industrial purposes, it________ (may need) to be treated differently.
Unless we________ (support) water - saving projects, it________ (be difficult) to solve the water shortage problem.
If we________ (reuse) grey water, we________ (can save) a significant amount of fresh water.
The water in the pipeline________ (be checked) regularly to ensure there________ (be) no leaks if the water supply________ (be) reliable.
Once the water________ (be) used in the production process, it________ (usually be recycled) if possible.
When the water________ (be) scarce, people________ (have to) find alternative ways to meet their needs.
Unless we________ (promote) water - saving technologies, we________ (not be able to) improve water use efficiency.
If you________ (put) a sponge in water, it________ (absorb) water quickly.
Water________ (be) crucial for the survival of all animals, and they________ (die) without it.
As soon as the water________ (be polluted), the aquatic life________ (be in danger).
When the water________ (be) calm, it________ (reflect) the surrounding scenery like a mirror.
Unless we________ (cooperate) with each other in water conservation, our efforts________ (be in vain).
If we________ (improve) the water - saving facilities in our homes, we________ (save) more water in our daily life.
The water in the water tank________ (be filled) automatically if the level________ (drop) too low.
Once the water________ (be) contaminated by chemicals, it________ (be harmful) to human health.
When the water________ (be) soft, it________ (be better) for washing clothes.
Unless we________ (set up) more water treatment plants, the polluted water________ (not be properly dealt with).
If you________ (pour) hot water into a glass bottle suddenly, the bottle________ (may break).
Water________ (be) widely used in various industries, and its demand________ (increase) steadily.
As long as we________ (encourage) people to save water, they________ (gradually form) good water - saving habits.
When the water________ (be) used for irrigation, it________ (should be distributed) evenly.
Unless we________ (address) the problem of water waste, we________ (not make) progress in water conservation.
If we________ (install) water - saving devices in public places, we________ (reduce) the overall water consumption.
The water in the pond________ (be stocked) with fish if the water quality________ (be suitable).
Once the water________ (be) filtered, it________ (can be used) for some non - drinking purposes.
When the water________ (be) turbid, it________ (be hard) to see the bottom.
Unless we________ (strengthen) water management, water - related problems________ (become) more serious.
If you________ (let) water stand in an open container for a long time, it________ (may evaporate) completely.
Water________ (be) a basic necessity of life, and we________ (should never) take it for granted.
As soon as the water________ (be heated) to a certain temperature, it________ (produce) steam for industrial use.
When the water________ (be) alkaline, it________ (affect) the growth of some plants.
Unless we________ (allocate) water resources rationally, there________ (be) conflicts over water in the future.
If we________ (develop) more water - saving irrigation methods, we________ (increase) agricultural productivity while saving water.
The water in the reservoir________ (be released) gradually if the water level________ (be too high).
Once the water________ (be) desalinated, it________ (can be used) as fresh water in arid areas.
When the water________ (be) warm, it________ (be more likely) to evaporate.
Unless we________ (evaluate) the water - saving effects regularly, we________ (not know) whether our measures are effective.
If you________ (shake) a bottle of water vigorously, the water________ (create) waves inside.
Water________ (be) an important part of our environment, and we________ (have the responsibility) to protect it.
As long as we________ (advocate) water conservation in schools, students________ (be more aware) of the importance of water.
When the water________ (be) used for firefighting, it________ (need to be supplied) in large quantities.
Unless we________ (innovate) in water - saving technologies, we________ (fall behind) in the global water conservation efforts.
If we________ (promote) the use of recycled water, we________ (reduce) the pressure on fresh water resources.
The water in the well________ (be tested) regularly to ensure the safety of drinking water if the villagers________ (rely on) it.
Once the water________ (be) contaminated by bacteria, it________ (be dangerous) to drink without treatment.
When the water________ (be) still, it________ (be easy) to observe the water - surface tension.
Unless we________ (raise) funds for water - saving projects, we________ (not be able to) implement them smoothly.
If you________ (pour) water slowly onto a sloping surface, the water________ (flow) down gradually.
Water________ (be) a key factor in economic development, and we must attach great importance to its sustainable use.
答案
boil; will turn
will be polluted; dump
take; will face
drops; will freeze
stops; will go
is; irrigating
leave; will be wasted
includes; are
shines; will evaporate
protect; will lose
recycle; will save
keep; will provide
rains; will rise
is; plays
don't value; will suffer
will supply; is
is; will take
melts; will turn
reduce; will decline
pour; will float
exists; is
reaches; will begin
flows; will make
educate; won't realize
use; will cut down
processes; is
is; won't be suitable
is; will be affected
mix; will become
is; won't grow
monitor; will be able to
drops; will have to
enforce; will continue
collect; will have
will be changed; use
evaporates; will form
is; will expand
raise; will keep
put; will absorb
is; is
cools; will condense
runs; should
manage; will run
plant; will help
will become; takes
is; can be used
is; will give off
stop; will become
add; will taste
is; must
carry out; will get
is; may need
support; will be difficult
reuse; can save
will be checked; are; is
is; will usually be recycled
is; will have to
promote; won't be able to
put; will absorb
is; will die
is polluted; will be in danger
is; will reflect
cooperate; will be in vain
improve; will save
will be filled; drops
is; will be harmful
is; will be better
set up; won't be properly dealt with
pour; may break
is; will increase
encourage; will gradually form
is; should be distributed
address; won't make
install; will reduce
will be stocked; is
is; can be used
is; will be hard
strengthen; will become
let; may evaporate
is; should never
is heated; will produce
is; will affect
allocate; will be
develop; will increase
will be released; is
is; can be used
is; will be more likely
evaluate; won't know
shake; will create
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advocate; will be more aware
is; needs to be supplied
innovate; will fall behind
promote; will reduce
will be tested; rely on
is; will be dangerous
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raise; won't be able to
pour; will flow
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