不理解,为什么要用opens?用open的第三人称单数?

不理解,为什么要用opens?用open的第三人称单数? the shop opens at 9;00 am 为什么用opens而不用open? The shop ______(open)at five in the moring 为什么用opens不用is opened she opens it .为什么要用it library _____ten hours a day.It____at 9p.mA is open,is open B open,open C is opens,opens D opens,is open要理由 帮我去区分一下什么时候用那些词 哪些是状态 哪些是动作 For_________,people in the United Sates have used Ms befor The shop opens at seven.我一直搞不懂为什么open后面要加s! he found the box was ___?open opening opens to open 选什么?要答为什么选这个 用open或opens填空：It's very hot.Keep the door ( ),please.是不是三单形式opens啊?如果我错了, This shop is opens at seven a.m为什么在open的后面要加s?怎么可能加ed the shops in england _______ at 9:00in the morning为什么要填open 而不是opens sleeping with the window(open)为什么填open不是opens,window不是可数码 close、closes、closed、open、opens、opend 各是什么词性,各用在哪个方面、最好举几个简单的例子. what time your restaurant opens this evening?为什么这个句子中open要加s呢?它不是第三人称疑问形式吗? opens和is open的区别 The supermarket ____ 24 hours.应该填哪个?为什么? the store opens at five.中的open为什么不用被动语态 The bookshop____(opens/is open).It usually____(opens/open/is open)at eight in the morning The sumpermaket (is open ) from 9am.To 9 pm every day.为什么要用is open不用open可是open的过去分词不是opened吗？ who()the door?(open opens opening)