本文討論美式英語口語帶“grand”表達“千”數字的名詞詞組裏的無聲數詞與名詞。基於定域條件，無聲詞的發音以及並列句法，我們主張“grand”並非出現在帶無聲的“IN”及“TOTAL”之間的介詞詞組裏面，而是出現於帶無聲的“THOUSAND”及“BUCKS”之間的名詞詞組。數詞一般不能是無聲的現象是跟無聲名詞無關。無聲詞類的存在可以從與其有關的顯性詞類推論，習得因此不是一個問題。

This paper argues that the lexical item grand in DPs expressing the notion of “thousand” in colloquial American English is best considered to be a modifier of the silent noun BUCKS appearing after a silent THOUSAND. Certain facts concerning locality, the pronunciation of silent expressions and coordination indicate that grand cannot be part of a PP containing the silent expressions IN and TOTAL. Numerals can almost never be left out, a fact that has little bearing on silent nouns. The acquisition of silent expressions is unproblematic, insofar as their distributions can be deduced from that of the overt expressions to which they are related.