《红宝书》考研英语词汇
? ? ? ? ? ? ? ? ? 每日一句after a spouse has been selected, each family investigates the other to make sure its child is marrying into a good family.
词汇打破
investigate [?n?vest?ɡe?t]v. 查询；研讨规划分析
本句的骨干是 each family investigates the other to make sure its 
child is marrying into a good family，其间 each family 为主语，investigates 为谓语，the other 为宾语，to make sure its child is marrying into a good family 为意图状语，its child is marrying into a good family 为宾语从句。after a spouse has been selected 为时刻状语从句。参阅译文
在选择爱人后，每个家庭都会查询对方，以保证自个的孩子嫁给了一个好家庭。
