a great deal of修饰不可数名词,意为“许多的”
如
A great deal of work awaits us.大量的工作等着我们去做.
His words caused a great deal of dissension.他的话引起了许多争论.
a great deal 后面不直接加名词,意为“大量”,修饰动词,相当于a lot,a little bit.如He smokes a great deal.他抽许多烟.
a great deal 后要修饰名词的话,就要加of,变成a great deal of.