由平行连接词连接两个或两个以上的对象构成
一、平衡连接词
1. 单一式:and, or, but
2. 短语式:as well as, rather than, other than, instead of
3. 相关式:both...and, not only ...but also
from..to, either...or
between...and, from...until
the same as, such as, as ...as
neither... nor, not...but, neither...or
二、平行的形式
X and Y
X, Y and Z(不常考)
X, Y, and Z (常考)
三、平行的性质
1. 单复数的平行(不是绝对要平行)
比如:cells, organs, adn tissues
a heart, veius, and arteries
2. 词性的平行
绝对,但是无adj的名词例外
local, state, and national government 对
city and regional planning 对
seasonally, or yearly 错
~~~~~~~~~~adv. ~~~~~~adj.