He has no brothers --no sisiters此处究竟应该填or还是and?两种说法都有,
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He has no brothers --no sisiters此处究竟应该填or还是and?两种说法都有,
He has no brothers --no sisiters
此处究竟应该填or还是and?两种说法都有,
He has no brothers --no sisiters此处究竟应该填or还是and?两种说法都有,
1. 并列结构中,or通常用于否定句,and用于肯定句.但有时and 也可用于否定句.请注意其不同特点:
There is no air or water in the moon.
There is no air and no water on the moon.
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.
2. or用于连接并列的单词、词组、短语或句子,表示"或者"的意思.如:
We can visit the World Park or travel around the world.
我们可以参观世界公园,或者周游全世界.
3.or用在选择疑问句中,灵活译为"还是".如:
Is that an apple or an orange?那是苹果还是桔子?
4. or用于否定句中,代替and ,表示"和"的意思.如:
I don't like bread , rice or porridge.我不喜欢面包、米饭和粥.
5. or用于连接两个并列的句子,表示"否则,要不然"的意思.如:
Hurry up, or you'll be late.快点,否则你要迟到啦.
and
and连接两个对等成分,这里就是: no brothers / no sisters
等于:He has no brothers or sisters.
此处用and 这属于肯定句
He does not have brothers or sisiters 否定句中用or
He has no brothers or sisiters 否定句的肯定形式用or
He has no brothers and no sisiters 肯定句用and
这三句话是同义句。
he has no brothers and no sisters
he has no brothers or sisters
如上都对
可以用连接词 neither..nor 既不。。也不