含義和用法不同。 a great number of：多數的，許多；大量的。修飾可數名詞複數。表示很多，相當於plenty of、a lot of修飾可數名詞的時候。強調量多。 a great many of： 大量；很多； 許多； 許許多多。修飾可數名詞表示量多，直接用a great many 即可；而a great many of表示什麼裡面的很大部分，它很大程度表示的是比例大。相當於a large part of。 例如： A great number of water fowls dwell on the island. 許多水鳥在島上棲息。 It affords a livelihood to a great number of people. 這給許多人提供了生計。 A great many people are often willing to sacrifice higher pay for the privilege of becoming white collar workers. 許多人常常寧願犧牲比較高的工資以換取成為白領工人的社會地位。 A great many of them are graduates of special training schools for die-hards. 有很多的頑固分子，他們是頑固專門學校畢業的 Now a great many of them are out of work . 現在他們當中許多人都失業了。 Total agricultural subsidies in 2009 were around $16 billion, which would pay for a great many of the ideas that follow. 在2009年全部的農業的補助金大約為160億，這可以用於實施下面的想法。
含義和用法不同。 a great number of：多數的，許多；大量的。修飾可數名詞複數。表示很多，相當於plenty of、a lot of修飾可數名詞的時候。強調量多。 a great many of： 大量；很多； 許多； 許許多多。修飾可數名詞表示量多，直接用a great many 即可；而a great many of表示什麼裡面的很大部分，它很大程度表示的是比例大。相當於a large part of。 例如： A great number of water fowls dwell on the island. 許多水鳥在島上棲息。 It affords a livelihood to a great number of people. 這給許多人提供了生計。 A great many people are often willing to sacrifice higher pay for the privilege of becoming white collar workers. 許多人常常寧願犧牲比較高的工資以換取成為白領工人的社會地位。 A great many of them are graduates of special training schools for die-hards. 有很多的頑固分子，他們是頑固專門學校畢業的 Now a great many of them are out of work . 現在他們當中許多人都失業了。 Total agricultural subsidies in 2009 were around $16 billion, which would pay for a great many of the ideas that follow. 在2009年全部的農業的補助金大約為160億，這可以用於實施下面的想法。