1. no more than =only 只有,仅仅,只不过
There are no more than a hundred people in the hall. 大厅里只有100人。
2. not more than=at the most 不超过,至多
There are not more than a hundred people in the hall. 大厅里至多100人。
3. no less than 多达,不少于
He made no less than£500. 他赚了多达五百英镑的钱。
He walks no less than five miles to school. 他上学至少要走五英里。
4. less than 不到,不太,极不
I won‘t take less than $5000 for my car. 我的汽车低于5000美元不卖。
The boys were less than happy about having a party. 开晚会男孩子并不很高兴。
Doctors have been less than successful in treating this condition.
医生在治疗这种病时极不成功。
5. more than 多于,超过(=over,后接数词);不只是(=not only,后接名词、动词或副词);非常,十分(=very,后接形容词、副词、动词或分词);难以,完全不能(用于more than…can…)