Englishfor English speakers
who
Pronoun
—
You use who to add a clause to explain more about the person or people you're talking about.
They are good people who are working hard.
We saw Kim, who was in his car.
We asked everybody who was there.
It was you who lost the keys, not me.
—
You use who to ask about a person or people.
Who was on the phone?
Whos your new teacher?
Who did you meet today?
He told me who was there.
I'll ask who can help us.
opened
—
adjective
(= open)
used of mouth or eyes
keep your eyes open
his mouth slightly opened
—
adjective
made open or clear
the newly opened road
—
adjective
(= open)
not sealed or having been unsealed
the letter was already open
the opened package lay on the table
the
Determiner
—
Used, instead of a, to reference something specific, already known to exist.
Compare "I read a book." and "I read the book."
—
Used with a stress, to show that the word following is special.
Are you the John Smith that I went to school with?
—
Used with an adjective that acts like a noun to mean all of the people concerned
The poor are always with us.
—
Used with superlatives forms of adjectives and adverbs.
You are the best.
window
Noun
—
A piece of glass in a wall to let people see through it.
He looked out the window.