As for "The shop is open" or "The shop is opened",which sentence is right?


I think this is an interesting question. We often do use the past participle form of a verb as an adjective, but as Zero's comment and kiamlaluno's answer indicate, opened is "non-standard" in OP's context.

Having said that, I think there is evidence that native speakers are trying to "regularise" things...

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A similar trend seems to be happening with adjectival roasted and cleaned, for example. So my guess is if OP lives long enough, he may eventually be able to refer to an opened shop quite naturally.

Picking up on my first sentence, it's worth noting that there are two "adjectival" forms derived from the verb to interest. Both are common, but they have different meanings...

I am interested - something/someone is exciting my interest
I am interesting - I am [capable of] exciting someone else's interest
*I am interest - would normally be considered completely unacceptable

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    I see the point you're making, but I think with specific regard to open there are two sense of the word at play here. I would easily speak of an opened bottle or an opened package (items which were sealed and are now opened) but for a shop, which opens in a different sense and closes again daily, I wouldn't use opened so easily. So I can't say, of course, that this won't change over time, but I do think there are two different senses of the word here, and that with shop such a change seems less likely to me. +1 regardless! – WendiKidd Jul 25 '13 at 18:37
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    @WendiKidd: I certainly agree it feels "easier" to use the past participle opened with things like bottles (i.e. - things which normally start off closed, sealed, and are only likely to be opened once to attain the new state). But if the trend is real, and it continues long enough, people might eventually start to see an open shop as a linguistic anomaly that needs to be brought into line. Whatever - my motivation in making this point was to reassure learners that it's not completely ridiculous to see our current idiomatic preference as perhaps "slightly illogical/confusing". – FumbleFingers Jul 25 '13 at 20:40
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    @Martha: Are you sure you're not "post-hoc" rationalising from the fact that two different verb forms can be used in that context? As I understand it, Pennsylvanians at least are quite happy to say this car needs washed where most of us say this car needs washing. – FumbleFingers Jul 25 '13 at 21:55
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    @FumbleFingers: you mean I'm supposed to be sure of things? Now you tell me... As far as the Pennsylvania dialect thing, I don't know if it has been established as fact that "this car needs washed" is the same as "this car needs washing" (rather than "this car needs to be washed"). – Martha Jul 25 '13 at 22:15
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    @Martha: I mean I can't see any semantic distinction being made in either of these two cases in the last 3 comments. But I can certainly see a potential difference between the room needs to be clean and ...needs to be cleaned. In the first version it's possible nothing actually needs to be done (apart from maybe confirming that the room is in fact already clean, and/or will remain clean for as long as the stricture holds). – FumbleFingers Jul 25 '13 at 22:27

Open is an adjective, and you should say "The shop is open."

Is the museum open on Sundays?

I declare this festival open.

  • You may add that "opened" can be used for physical objects with "doors": e.g. "the box was opened"... – virolino Mar 4 at 9:22
  • As @FumbleFingers answer shows, with physical objects, native speakers tend to use open (the adjective). The box was opened could be using the passive form of open (the verb). – kiamlaluno Mar 4 at 12:15
  • Sorry for the confusion. What I meant to say is that while "opened" can be used with physical objects (at least in some situations), it cannot be used with "festival" or "mind". However, "open" can be used with "everything". – virolino Mar 4 at 12:19

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