the room must be clean还是must be cleanedMother said to her daugther“The room ——— before you leave.".

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theroommustbeclean还是mustbecleanedMothersaidtoherdaugther“Theroom———beforeyouleave.".theroommustbecle

the room must be clean还是must be cleanedMother said to her daugther“The room ——— before you leave.".
the room must be clean还是must be cleaned
Mother said to her daugther“The room ——— before you leave.".

the room must be clean还是must be cleanedMother said to her daugther“The room ——— before you leave.".
这句话侧重于：让daughter 在离开时打扫房间.
在英语中常用被动语态表示的
如果是 the room must be clean 语法上行得通,但是就没有了一定要让daughter 打扫的意思了
可以解释成：保持干净.
这里老妈子要女儿打扫,那就用must be cleaned 呗

must be cleaned 屋子必须被打扫干净哦（被动be + 过去分词） ^-^

must be cleaned
被动语态 be+动词的过去分词

其实都行，前者看作是形容词，后者是动词被动式

must be cleaned
clean在系动词be后要变成过去分词看作是形容词不行吗？另外膜拜下神id不行。那不是形容词。那是动词的过去分词。为什么不行呢（1）be后面不一定跟形容词 （2）cleaned 的原型是一个动词。这里加个ed，表示一种被动语态。 明白了就采纳吧。不明白o(>﹏<)o 是不是和语气有关be 后面不能直接跟动词原形 再说，这句话的主语是人，屋子是“被擦”，...

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must be cleaned
clean在系动词be后要变成过去分词

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there must be someone in the room _(be)there She must be in the room.的意思 we must (be)quiet in the reading room. the room must be kept wet.变成被动语态! They must be in the reading-room,_______ _______[They must be in the reading-room,_______ _______[反义疑问句] (1/2)We must ask Tom to clean his room again Tom _ _ _ to cle These magazines_____out of the reading-room A.must not take B.must not be taken C.must not take they must dust the room The light in the room must be turned offThe light in the room must be turned off before you leave .为什么要用must be 不是填must turn off the room must be clean还是must be cleanedMother said to her daugther“The room ——— before you leave.. He must be in the room.改成反意疑问句怎么改? There is someone in the room.It must be my brother为什么要用IT He must be in the room,___ he? 如何做?为什么? The light in his room is on now ,so he ______at homemust be 还是must stay? The book must be s____ in your room.根据首字母填空 the room is big enough it___hold 50 people 1.must 2.must be 3.can 4.has to it must be in the living room.( 改为反问疑问句 )it must be in the living room,isn't it为什么是isn't it而不是Must't it must be the water