该句什么结构呢Whenyouhaveonechild,yourin-laws,parents,friends,andperfectstrangersareonlytoohappytotellyouthatyouronlychildneedsabrotherorsister.Doeshe?Ifyourtoddlerrefusestoshareatoyortaketurns,eveniftheper

Question

该句什么结构呢
When you have one child,your in-laws,parents,friends,and perfect strangers are only too happy to tell you that your only child needs a brother or sister.Does he?If your toddler refuses to share a toy or take turns,even if the person doesn't say the words,you know she is thinking:If that child had a sibling she wouldn't behave this way.
In a comment to an earlier blog post,Anonymous wrote,"having at least two children benefits in that the child has companionship,learns how to cooperate with others at a very early age,and develops important interpersonal skills that come of learning how to communicate with others within the safety and acceptance of the home environment."
1、第二段中的:having at least two children benefits in that the child has companionship,
读起来很不顺,谁帮我理一下呢,什么结构?
2、第二段最后一句:within the safety and acceptance of the home environment是什么意思?

Answer 1

in that =because
有至少两个孩子是很有好处的,因为,孩子可以有伴,在很小的时候就可以学习怎样和他人合作,并可以养成重要的交际技巧（怎样的技巧呢?后面的that的定语从句修饰）,样的技巧是来源于怎样和别人交流.
within the safety and acceptance of the home environment.：在一个安全的适合的家庭环境中.（作者的意思是,上述的技巧无需小孩到复杂的社会上去培养,在安全的家中就可完成）