Englishfor English speakers
association
Noun
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An association is a way that two things are similar, belong together, or are connected or related.
I don't see any association between what happened to you and what happened to me.
I suspect there is an association between the weather and the number who are sick.
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An association is a group of people who have a common goal or interest.
The NBA stands for the "National Basketball Association."
I have been a member of the American Psychological Association and the American Speech-Language-Hearing Association.
All the teachers were at an association meeting.
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Association is the when you associate (spend time with certain people).
I'm afraid your association with those wild people will get you in trouble.
for
Preposition
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shows that something belongs to something else, or has a specific function
This cake is for you.
This is a net for catching fish.
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For is used to show the reason for something
He was angry, for he had never been called such terrible names before.
for
Subordinator
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For introduces a clause with a subject and a to-infinitive
It's not good for you to be too relaxed.
strengthening
—
noun
becoming stronger
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noun
the act of increasing the strength of something
agricultural
Adjective
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Relating to agriculture
The conversions of agricultural and forest land to industrial uses is very common.
The country's main economic activities are agricultural production and tourism.
60 percent of the labor force remains in the agricultural sector.
Few safety regulations are available to protect agricultural workers.
research
Noun
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Research is the process or result of trying to find an answer by reading, interviewing, watching, or doing experiments.
The last 10 years has provided a huge amount of research into a cure for cancer.
We've been conducting research into the reason for the changes in these fish.
research
Verb
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If you research a question, you try to find an answer, usually by reading a lot about it, or by doing experiments.
I have to research the history of King Henry II for my English class.
in
Preposition
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Used to show that something is inside something else.
The cat is in the box.
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Used to show that someone is at home, or is available.
Is John in?
The Doctor is now in.
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Used to show movement towards the inside.
The rain came in through the window.
east
Noun
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The east is a place that is closer to where the sun rises than another place.
My parents live in the east.
east
Preposition
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One of the four compass directions: 90º clockwise from north. The sun rises in the east.
I drove east from Chicago.
and
Conjunction
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You use and to talk about two things at once.
I like singing and reading.
Mary and Jane went on a holiday together.
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You use and when you are listing a few things and you are now on your last item of the list.
I like singing, reading, cycling and playing soccer.
I used to like this girl from my class as she is pretty, gentle and caring.
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And is used when you are putting two sentences together.
She came into the store, shouted at the cashier, and left.
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Used to show what happened after something else.
The alarm went off and I woke up.
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And is used to join certain numbers together.
Two hundred and thirty-five people went missing after the earthquake.
central
Adjective
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A thing is central when it is in the middle.
The house is central to all of the stores.
Africa
Proper noun
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Africa is the continent that is south of Europe, east of the Atlantic Ocean, west of the Indian Ocean and north of Antarctica.
Africa is the world's second-largest and second most-populous continent, after Asia.