主合同有效，保证合同的效力要根据合同主体资格、当事人意思表示是否真实等进行判断。

If the main contract is effective, the efficacy of the guaranty contract is to be judged by the qualification of the main body of the contract and whether the parties' expression is true, etc.

youdao

本文从合同当事人的意思表示、主体资格、代订合同等几个方面阐述了合同的效力问题。

This paper expounds the contract efficiency question form some ways consisted of meaning expression of contract party, subject qualification, signing a contract for another person, etc,.

youdao

认为当事人合意是合同成立的根本条件，当事人的主体资格是影响合同效力的一个重要方面。

Here considers that conforming with partys mind is basic condition for contract establishment and the subject qualification of party is a important way for influencing contract efficiency.

youdao