Englishfor English speakers
in
Preposition
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Used to show that something is inside something else.
The cat is in the box.
—
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.
grade
Noun
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A grade is a letter or number that you use to show how good something is. Usually, teachers use it to show how good a student's test or assignment is.
He got 97% on his test. It was the top grade in the class.
Our restaurant uses only the highest grade of meat.
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In North American English, a grade is the school year.
Most Canadian children start grade one when they are six years old and finish grade 12 when they are 18.
grade
Verb
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If you grade something, you judge how good it is.
After the final exam, the teacher spent the whole weekend grading papers.
My friends goes to the farm to grade animals that are going to be sold.