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{x|x＞﹣1且x≠1} {x|x＞1且x≠2} {x|﹣1＜x＜1} {x|x≠﹣1且x≠1}
a≠1且a≠-1 a≠1或a≠-1 a=1或-1 a≠0且a≠-1
x≠-1 x≠1 x≠1且x≠0 x≠-1或x≠0
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若x2=1，则x≠1且x≠﹣1 若x2≠1，则x≠1且x≠﹣1
若x≠1且x≠﹣1，则x2≠1 若x≠1或x≠﹣1，则x2≠1
≥30%(NE ≥50%(NE ≥60%(NE ≥80%(NE ≥90%(NE
x≠﹣1 x≠1 x≠1且x≠0 x≠﹣1且x≠0
x≠0 x≠-1且x≠-2 x≠-1 x≠-1且x≠0
the most widely read read the most widely the mostly wide read the more widely read
one thousand，forty hundred and twenty six one thousand and forty hundred and twenty-six o
It was funny of the businessman to read the two copies. The audience should have listened to the speech attentively. The secretary should have been more careful. The businessman should have read the two copies of the original.
The more we read and learn, the more ignorant we are. The more we read and learn, the more learned we are. The more we read and learn, the more confused we will be. The more we read and learn, the more snobbish we become.
a≠2 b≠﹣1 a≠2或b≠﹣1 a≠2且b≠﹣1
“若x=1，y=1，则x+y≠2” “若x≠1，y≠1，则x+y≠2”
“若x≠1或y≠1，则x+y≠2 “若x≠1或y≠1，则x+y=2”
x≠﹣1 x≠1 x≠1且x≠0 x≠﹣1且x≠0
x≠﹣1 x≠1 x≠1且x≠0 x≠﹣1且x≠0
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