来看本日的主题句：We live in a culture that teaches us to promote and advertise ourselves and to master the skills required for success, but that gives little encouragement to humility, sympathy, and honest self-confrontation, which are necessary for building character.
让我们来逐句解析：
We live in a culture 我们生活在一种文化里
然后是that勾引的定语从句详细来润色这种文化：
that teaches us to promote and advertise ourselves（这种文化）教我们去推广自己、为自己打广告
and to master the skills 并且去节制那些技能
什么技能呢？然后是过去分词作后置定语：
required for success, 对付成功来说须要的（技能），
but that gives little encouragement to humility, sympathy, and honest self-confrontation,
这里but后面勾引的迁移转变句还是作为that勾引的定语从句润色前面的culture，这个迁移转变句也便是说：但是这种文化却很少给谦善、同情，以及诚挚面对自我以鼓励，
紧接着是一个which勾引的非限定性定语从句，详细来润色之前的各种品质：
which are necessary for building character. 这些（也便是谦善、同情、诚挚面对自我）对塑造品质来说都是必不可少的。
be necessary for sth.，也便是“对某事必不可少”。
