语法：紧接于要修饰词之前，常位于句首。

例1：

Whereas Party B has the right and agrees to grant Party A the rights to use, manufacture and sell the Contract Products of Patented Technology;

Whereas Party A desires to use the Patented Technology of Party B to manufacture and sell the Contract Products;

The Representatives authorized by the Parties to this Contract have, through friendly negotiation, agreed to enter into this Contract under the terms, conditions and provisions specified as follows:

注释：

（1） whereas：鉴于

（2） to grant Party A the rights to use, manufacture and sell the Contract Products of Patented Technology：将专利技术的合同产品的使用权、制造权和销售权授予甲方

（3） the Representatives authorized by the Parties to this Contract：双方授权代表

（4） under the terms, conditions and provisions specified as follows：就以下条款

参考译文：

鉴于乙方有权并同意将专利技术的合同产品的使用权、制造权和销售权授予甲方；

鉴于甲方希望利用乙方的专利技术制造并销售合同的产品；双方授权代表经友好协商，同意就以下条款签订本合同：

例2：

Whereas Party A possesses proprietary technical information including designs, techniques, workmanship, formulas, skills and other data useful in the manufacture and marketing of certain products; and

Whereas Party B desires to acquire the right and licence to use the above-mentioned technical assistance for the purpose of manufacturing, using and selling such products; and

Whereas Party B desires to use the following trademarks owned by Party A.

Now Therefore, the parties hereto do hereby agree on the contents of the agreement as follows:

注释：

（1） proprietary technical information：专有技术信息