19.In a period characterized by the abandonment of so much of the realistic tradition by authors
such as John Barth，Donald Barthelme，and Thomas Pynchon, Joyce Carol Oates has seemed at
times determinedly old-fashioned in her insistence OD the essentially mimetic quality of her
fiction.
(特殊结构 characterized by…——以…为特征)
尽管处于一个以抛弃大量现实主义传统(以作家约翰·巴思、唐纳德·巴塞尔姆和托马斯.品钦
为代表)为特征的时代，乔伊斯·卡罗尔·欧茨因为坚持自己小说本质上模仿的特点，有时候看
起来是一个坚定的守旧派。
分句 1. characterized by the abandonment of so much of the realistic tradition by authors such as
John Barth，Donald Barthelme，and Thomas Pynchon,
分句 2. Joyce Carol Oates has seemed at times determinedly old-fashioned in her insistence OD
the essentially mimetic quality of her fiction.
分句 1 做时间状语“In a period”的后置定语，补充修饰 period，相当于省略了 “which was”
的定语从句
分句 2 是主句
20.If it were not for this faculty，they would devour all the food available in short time and would
probably starve themselves out of existence.
(虚拟语气)
如果不是具有这种能力，它们就会在短时间内吞掉所有能得到的食物，而且很可能会因饿死
而灭绝。
分句 1. If it were not for this faculty
分句 2. they would devour all the food available in short time
分句 3. would probably starve themselves out of existence
分句 1 是虚拟句的条件从句
分句 2、3 是并列， 主句
21.Individualism is weakly developed in folk cultures，as are social classes.
(倒装 as are social classes) ’
个人主义和社会阶层在民间文化群体中的发展十分薄弱。
分句 1. Individualism is weakly developed in folk cultures
分句 2. as are social classes
1 和 2 并列， 2 采用倒装语序，as 表示“也，和… 一样”