12br 12br 10Does the structure exist? 12br 12br 12blockquote 10This sturcture is correct. We use this type of structure in situations where you are expecting something to have happened.
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01cite10Qingqing12cite10I think there is no such structure "mustn't have done", is there?12br
12br
10But I have found a sentence in a big dictionary "Mr Green mustn't have received my letter, otherwise he would have replied before now".12br
12br
10Does the structure exist? It should be "Mr Green c
01cite10Qingqing12cite10I think there is no such structure "mustn't have done", is there?12br
12br
10But I have found a sentence in a big dictionary "Mr Green mustn't have received my letter, otherwise he would have replied before now".12br
12br
10Does the structure exist? It should be "Mr Green c