Englishfor English speakers
specialist
Noun
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A specialist is a person who is highly skilled in one type of activity or study.
His army training had made him a bomb disposal specialist.
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A specialist is a doctor who is skilled in treating one part of the body.
It hurt so much when she swallowed food that she was sent to a throat specialist.
know
Verb
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When you know something, you have facts or ideas in your mind.
I knew more things after I went to school.
I know a little Spanish.
I think I can do it, but I don't know.
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You know a person, if you have met him or her.
Yes, I know John. I met him in class last week.
We want you to know that it will be OK.
how
Adverb
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The word "how" is a question word, to ask about the way something happens or the way people do things.
How will we ever solve this problem?
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The word "how" is used to tell about the way something happens or the way people do things.
I know how we can solve this problem?
This is how to make this machine work.
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used to show that you feel strongly about something.
How old he looks!
how
Subordinator
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You use how to tell that something happens, is done, or is true.
She told him how it wasn't fun anymore.