1.首先,a variety of 和 varieties of 的用法是一樣的,只是樣子不一樣罷了.正如,a lot of 和 lots of 一樣.
2.二者即可修飾可數(shù)也可修飾不可數(shù).
3.后面動(dòng)詞的單復(fù)數(shù)要根據(jù)名詞的單復(fù)數(shù)而定.a variety of (或varieties of )books 后面要用are,
中心詞始終是books啊,不要被前面的修飾詞迷惑.那后面的動(dòng)詞的單復(fù)數(shù)根據(jù)修飾詞的單復(fù)數(shù)決定的又有哪些呢 像quantity 一類(lèi)的1.a quantity of 后既可接復(fù)數(shù)可數(shù)名詞，亦可接不可數(shù)名詞。2.在它們分別和其后的名詞構(gòu)成短語(yǔ)作主語(yǔ)時(shí)，其謂語(yǔ)動(dòng)詞通?？?of 后名詞的具體情況而采用單數(shù)或復(fù)數(shù)形式。3.如果是接不可數(shù)名詞，則謂語(yǔ)用單數(shù)形式，如果是接復(fù)數(shù)可數(shù)名詞，則謂語(yǔ)通常要采用復(fù)數(shù)形式4.quantities of 后既可接復(fù)數(shù)可數(shù)名詞，亦可接不可數(shù)名詞 , 后面的謂語(yǔ)都用復(fù)數(shù)形式。5.There is a large quantity of milk. Great quantities of fish are caught on the high sea. Large quantities of water are needed for cooling purposes.