Knowing what is an adjective and what is an adverb is very important in English grammar. For example, the following sentences are typical mistakes, caused by confusion over the difference between adjectives and adverbs.
for examble
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*He works hardly
*He works hard
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She writes good*
He writes well*
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*It's a really problem
* It's a real problem
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Adjectives describe
nouns
الصفات تصف الاسماء
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مثل
"A good student."
"A nice day."
"He is interesting."
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Adverbs describe verbs or adjectives
الضرووف تصف الافعال او
الصفاات
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مثل
"He eats well."
"She learns quickly."
"I'm really tired."