其次，对各类不同成因的无效保证合同的法律后果作了分析。
Secondly, the legal consequences of a variety of causes of the invalid suretyship contract are analyzed.
文章在阐述无效保证合同的确认的四大要件的基础上，比较系统地分析了无效保证合同的过错责任和民事责任。
The paper expounds the four factors in determining invalid warrant contracts and continues to systematically analyse the liability and civil responsibilities of invalid warrant contracts.
如果承包人切实履行并遵守上述合同的所有条款，本保证书所承担的义务即告无效。
If the Contractor shall duly perform and observe all the terms, provisions, conditions and stipulations of the said Contract, this obligation shall be null and void.
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