Smokeless Fuels Contain Ultrafine Particles That Get Embedded in Lungs, Study Shows
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EN: The sentence uses a 'That-Clause' as a Relative Clause to modify the noun 'Tiny Particles'. The word 'that' acts as a relative pronoun and the subject of the verb 'harm'.
The factory uses machines that reduce air pollution.
EN: In news headlines, the Present Simple tense ('Finds', 'Release') is often used to describe recent discoveries or events to make the news feel more immediate and relevant.
New Report Shows Global Temperatures Rising.
EN: In many parts of Europe and the UK, 'smokeless fuels' (like anthracite or manufactured briquettes) are marketed as eco-friendly alternatives to traditional coal. This headline challenges the common public perception that 'less visible smoke' equals 'safer air'.
EN: The Present Perfect Tense (has revealed) is used to describe an action that happened at an unspecified time in the past and has relevance to the present, often used for reporting news or research findings.
The scientist has discovered a new species of bird.
EN: The 'as + adjective + as' structure is used to compare two things. When used with 'not', it indicates that the first thing has less of a quality than the second thing.
The exam was not as difficult as I expected.
EN: In many European countries, 'smokeless fuels' are promoted by governments to reduce visible air pollution (smog) in cities. However, this sentence highlights a growing scientific concern that invisible pollutants can be even more dangerous.
EN: The sentence uses a 'Noun Clause' starting with 'that' as the direct object of the verb 'discovered'. This structure allows you to report a fact or finding.
Scientists found that the ice is melting quickly.
EN: The word 'burning' is a 'Gerund' (a verb ending in -ing acting as a noun), which serves as the subject of the noun clause.
Eating vegetables is good for your health.
EN: In many European countries, 'smokeless fuels' (like anthracite or manufactured briquettes) are promoted by governments to reduce visible air pollution in cities, but this study highlights a hidden environmental cost.
EN: The 'so + adjective + that' structure is used to express cause and effect. 'So' emphasizes the degree of the adjective, while the 'that' clause describes the resulting consequence.
The music was so loud that I couldn't hear him speak.
EN: The conjunction 'and' is used here to connect two parallel verb phrases ('travel deep' and 'cause problems') that share the same subject ('they').
He decided to go home and rest for a while.
EN: Passive Voice (be + past participle): This structure is used when the action is more important than who is performing it. Here, 'are sold' indicates that the fuels are the recipients of the selling action.
Fresh vegetables are sold at the local market every morning.
EN: Prepositional Phrase 'as... for...': 'As' is used here to function as a preposition meaning 'in the role of', while 'for' indicates the purpose or use of the item.
This room is used as a study for the children.
EN: In many parts of the UK and Ireland, 'smokeless zones' were established to reduce air pollution. In these areas, only authorized smokeless fuels (like anthracite or certain manufactured briquettes) can be burned in fireplaces, as traditional coal and wood produce too much visible smoke.
EN: Present Perfect Tense (have + past participle): Used to describe an action that happened at an unspecified time in the past and has relevance to the present situation.
She has lived in this city for ten years.
EN: Passive Voice (be + past participle): Used when the focus is on the action or the receiver of the action rather than the doer. In this sentence, 'they' (fuels) are the ones being expected by people.
The results are expected to be announced tomorrow.
EN: In many European countries, 'smokeless fuels' are a common term for anthracite or manufactured solid fuels used in 'smoke control areas' to reduce visible pollution, though this study challenges their actual safety.
EN: The use of 'something' followed by an adjective (surprising). In English, indefinite pronouns like something, anything, or nothing are modified by adjectives that come after the pronoun, not before it.
I want to try something different for dinner tonight.
EN: The Past Simple tense is used here to describe a completed action that occurred at a specific time in the past (during their tests).
The team finished the report yesterday.
EN: The University of Galway is a prestigious research university in Ireland. In academic and news writing, specifying the institution adds credibility to the scientific findings being discussed.
EN: The sentence follows the 'Subject + Linking Verb + Subject Complement' pattern (SVC). The linking verb 'was' connects the subject 'The discovery' to the adjective 'accidental' which describes it.
The meeting was productive.
EN: The Past Simple tense is used here to describe a completed state or fact in the past. 'Was' is the past form of the verb 'to be' for singular subjects.
The movie was exciting.
EN: In scientific contexts, 'accidental discovery' often refers to 'serendipity'—finding something valuable while looking for something else. This is a common theme in the history of science (e.g., the discovery of Penicillin).
EN: The Past Continuous Tense (was/were + verb-ing) is used to describe an action that was in progress at a specific time in the past or to provide background information for a story.
The team was analyzing the data when they found the error.
EN: The correlative conjunction 'both... and...' is used to join two equal parts of a sentence (nouns, adjectives, or phrases), emphasizing that two things are included.
The study examined both urban and rural air quality.
EN: In many European countries like Ireland and the UK, traditional wood or coal-burning stoves are common for home heating. However, due to air quality concerns, governments are increasingly regulating what types of fuel can be burned, leading to the rise of 'smokeless' alternatives.
EN: The phrase 'As expected' is a fixed idiomatic expression used as a sentence adverb to indicate that the information following it confirms a previous prediction or common knowledge.
As expected, the team won the championship easily.
EN: Comparative Adjectives: 'Less' is the comparative form of 'little' (used with uncountable nouns like 'smoke') to compare two things. The structure is 'less + [uncountable noun] + than'.
This new engine uses less fuel than the old one.
EN: In many European countries, including Ireland and the UK, 'smokeless fuels' (like anthracite or manufactured briquettes) are legally required in 'Smoke Control Areas' to reduce urban air pollution, though this study challenges their perceived safety.
EN: The structure 'X times more + [noun]' is used to express multiples or comparisons. It indicates that the quantity of something is multiplied by a specific factor compared to another reference point.
This new engine produces four times more power than the old one.
EN: The past participle 'burned' acts as a reduced relative clause (which was burned), functioning as an adjective to modify the noun 'kilogram'.
For every dollar spent, you earn one reward point.
EN: In many European countries, including Ireland and the UK, 'smokeless fuels' (like anthracite or manufactured briquettes) are legally required in 'smoke control areas' to reduce visible air pollution. However, this study highlights a hidden danger that these regulations might have overlooked.
EN: The verb 'means' is followed by a 'that-clause' acting as the direct object. In English, the conjunction 'that' is often omitted in informal or journalistic writing when the meaning remains clear.
The dark clouds mean (that) it will rain soon.
EN: The phrase 'become deposited' uses 'become' as a linking verb followed by a past participle (deposited) to describe a change of state or a process of being placed somewhere.
Sediment can become deposited at the bottom of the river.
EN: Appositive phrases (Non-restrictive): The phrase 'from the University of Galway' acts as an appositive or a parenthetical modifier, providing extra information about the subject (Professor Jurgita Ovadnevaite). It is set off by commas to show it is non-essential to the sentence structure.
Mr. Smith, a local baker, won the competition.
EN: Simple Past Tense: The verb 'explained' is in the simple past tense, used to describe a completed action that occurred at a specific time in the past.
The doctor explained the treatment plan to the patient.
EN: The University of Galway is a prestigious research university in Ireland. In academic and news contexts, it is common to introduce experts by their full title and institutional affiliation to establish authority on the subject matter.
EN: Past Perfect Tense: Used to describe an action that was completed before another point in the past. Here, 'had considered' refers to the period before the study's findings were revealed.
She had finished her homework before her parents arrived home.
EN: Noun Clause with 'that': The word 'that' introduces a subordinate clause that functions as the direct object of the verb 'consider'. It explains exactly what was not considered.
He realized that he had left his keys in the car.
EN: In many European countries, 'smokeless fuels' are promoted by governments to reduce visible air pollution (smog). This sentence highlights a scientific irony where a solution to one problem (smoke) inadvertently creates another (invisible particles).
EN: The 'not... until' structure is used to indicate that an action or situation did not happen before a specific time or event. It emphasizes that the event only occurred at that later point.
I did not realize my mistake until he pointed it out.
EN: 'Such a/an + adjective + noun' is used to emphasize the degree or quality of something. It is more emphatic than using 'very'.
It was such a beautiful day that we went for a walk.
EN: In scientific contexts, 'data' is technically the plural of 'datum', but in modern English, it is commonly used as an uncountable noun with a singular verb. However, researchers often treat it with high precision as it represents the foundation of their evidence.
EN: Non-defining Relative Clause: The phrase 'who also worked on the study' provides extra information about the subject (Doctor Chunshui Lin). It is set off by commas and can be removed without changing the basic meaning of the sentence.
My brother, who lives in London, is a doctor.
EN: Spend Time Doing Something: The structure 'spend + time + V-ing' is used to indicate how much time is dedicated to a specific activity.
She spent three hours reading the report.
EN: In academic and news contexts, it is common to introduce a person's full name and title followed by a relative clause to establish their credibility or role in the story.
EN: Prepositional Phrases as Adverbials: The sentence starts with 'After the laboratory findings,' which is a prepositional phrase acting as an adverbial of time. It sets the context for when the main action occurred.
After the long meeting, the team decided to take a break.
EN: Phrasal Verb 'Go back': This verb means to return to a place or a previous activity. In this context, it is followed by an infinitive 'to check' to express purpose.
He went back to the library to find his lost notebook.
EN: Dublin is the capital of Ireland, while Birr is a smaller heritage town. The study's focus on both an urban center and a smaller town helps researchers understand how air quality issues affect different types of communities across the country.
EN: Indirect Questions: When a question (e.g., 'How do particles affect air quality?') is embedded within another sentence, it follows statement word order (Subject + Verb) instead of question word order.
I don't know where he lives.
EN: Infinitive as Object: The verb 'want' is followed by a 'to-infinitive' (to + base verb) to indicate the action that is desired.
She wants to study environmental science.
EN: In many European countries, 'smokeless fuels' (like anthracite or manufactured briquettes) are legally required in 'Smoke Control Areas' to reduce visible soot, but as this study shows, they still pose invisible health risks.
EN: The verb 'suggest' is followed by a 'that-clause' which functions as the direct object of the sentence. In this context, 'suggest' means to indicate or show that something is likely to be true.
The evidence suggests that the climate is changing rapidly.
EN: The word 'need' is used as a transitive verb followed by a noun phrase ('more attention'). It expresses a necessity or requirement for something.
This old house needs a new coat of paint.
EN: The verb 'believe' is followed by a 'that-clause' which functions as the direct object of the sentence. This structure is used to report opinions, thoughts, or facts.
Scientists believe that climate change is a serious threat.
EN: The passive voice 'should be updated' (modal verb + be + past participle) is used here because the focus is on the regulations being changed, rather than who is changing them.
The software should be updated regularly to ensure security.
EN: In many European countries, 'smokeless fuels' (like anthracite or manufactured briquettes) were promoted as eco-friendly alternatives to traditional coal to reduce visible smog in cities. This sentence reflects a shift in scientific understanding where 'invisible' pollution is now seen as a major threat.
Key vocabulary words with IPA pronunciation, definitions, example sentences, and interactive quizzes.
Phrases with type tags, bilingual definitions, usage notes, and example sentences.
to result in or cause something to happen
the degree to which the air is clean or polluted
to return to a place, subject, or activity
in the way that was planned or thought likely to happen
Particles with a diameter of less than 0.1 micrometers, often resulting from combustion.
To settle or accumulate in a specific place through a natural or physical process.
A small amount of a substance taken to be tested or analyzed in a laboratory.
Data points or readings collected by sensors to determine the concentration of pollutants in the atmosphere.