一….也/都/+没/不…..

The construction “一….也/都/+没/不…..”

This construction is frequently used to emphasize negations. A measure word or a noun follows the character “一”， and the noun usually indicates the recipient of the action, sometimes it also acts as the carrier of the action. When “一”is used for emphasis. The sentence tends to sound exaggerated in tone. For example,

他一点儿信用都没有。
我这辈子一次债都没有借过。
植物园里一个也没有。
这次活动我们系一个人也没有参加。

In the sentences with subject-predicate phrase as the predicate, the construction “一….也/都/+没/不…..” is often used to express the complete exclusiveness. For example,
您的钱我一份也不要。
这事儿他好像一点儿也不知道。