Open and opened

0 "The door is opened." - it depends upon the context. 02br
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00If you want it to match "I opened the door." then you need to use the simple past tense, "The door was opened" 0-

0 In the school, there are certain rooms which contain expensive routers, switiches etc. Usually those rooms are locked because of the expensive equipment. 02br
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00The teacher must come and open the door. 02br
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00Could he tell the students the following: 02br
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00The door is opened. 02br
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00His message

0 In this context I would say," the door is open now..." or "the door has been opened." 0-

0 Or simply "the door is open" The context helped, thanx 0-

0 01blockquote

00Could he tell the students the following: 12br
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10The door is opened. 12blockquote

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00Yes, but it is not very idiomatic. 02br
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00"The door is opened" is really more used for habitual actions: 02br
00"The door is opened every day at noon." 02br
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0 As you know, "open" can be both an adjective and a verb. Which came first, the adjective "open" or the verb "open"? The answer is it was the adjective "open". The adjective "open" is used to describe a thing like a gate as it is in a state of "being up". The verb "open" was coined after the adjective "open" and it is used to mean to "make something open". 02br
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00You ca

0 01blockquote

00You can never use 'opened' as a state-indicating adjective.12blockquote

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00An afterthought: 02br
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00We may say rather "refrigerate 01u00opened cans02u00" than "refrigerate 01u00open cans02u00". 0-

Paco, great answer!