比较and和or1)并列结构中,or通常用于否定句,and用于肯定句
2)但有时and也可用于否定句
请注意其不同特点:Thereisnoairorwaterinthemoon
Thereisnoairandnowateronthemoon
在否定中并列结构用or连接,但含有两个否定词的句子实际被看作是肯定结构,因此要用and
典型例题---Idon'tlikechicken___fish
---Idon'tlikechicken,___Ilikefishverymuch
and;andB
and;butC
or;butD
or;and答案C
否定句中表并列用or,but表转折
判断改错:(错)Wewilldiewithoutairandwater
(错)Wecan'tlivewithoutairorwater
(对)Wewilldiewithoutairorwater
(对)Wecan'tlivewithoutairandwater