a lot of (U\C)
lots of (U\C)
a large quantity of (C)
plenty of (U〕
a good many of （U〕
a number of （C〕
a variety of （C〕
varieties of （C〕
a great deal of （U〕
many a\an\another(后接单数可数,表示许多〕
注：U表示不可数,C表示可数.