Not to train the child in the values his parents have found enduring is to neglect him.Not to educate him is to condemn him to repetitious ignorance.(如果我们不用家长们奉为圭臬的价值观念训练儿童的话，那就是对儿童疏于管教。如果我们不对儿童进行教育的话，那就要使儿童沦为世世代代的愚昧状态) 这英文句子 用语法怎么理解？感谢大神帮忙百忙之中分析