2. 含有半否定意义的词语
barely, hardly, few, little, rarely, scarcely, seldom, not all, not everyone, not everything,...具
有半否定的意义。例句：
1) We could hardly see any fresh vegetables in winter on market several years ago.
几年前在冬天市场上很难见到新鲜蔬菜。
2) These young people know little about how to choose good books to read.
这些年轻人几乎不知道怎样挑选优秀的书籍来读。
3. 不含否定意义的否定结构
有些词和词组形式上是否定结构，但其含义是肯定的，比如：cannot but, can't help,
no sooner...than, not...until, in no time, none other than, nothing but,等等。例句：
1) We can't but face the reality.
我们只有面对现实。
2) These old buildings will be replaced by modern apartment buildings in no time.
这些旧建筑将很快为现代化的公寓所代替。
4. 否定结构的倒装语序
我们有时为了强调而把否定词和词组放在句首，这时句子结构应倒装。例如：
1) On no account should we follow blindly.我们决不应当盲从。
2) No where has the world ever seen such great enthusiasm for learning as in our
country.没有任何其他地方有我国这样高的学习热情。