parents have to do much less for their children today than they used to do and at home has become much less of a workshop .

parents have to do much less for their children today than they used to do and at home has become much less of a workshop .
parents have to do much less for their children today than they used to do and at home has become much less of a workshop .

parents have to do much less for their children today than they used to do and at home has become much less of a workshop .
这句后半部分有点小问题,不是at home,从意思上应该是(a) home has become much less of a workshop.
今天的家长为他们的孩子做得比以前少多了,而家也不再是一个工场间了.

研究表明，许多疾病的发生与缺乏锻炼或根本不进行体育锻炼有关系。 研究表明，许多疾病和不做或少做运动有关

父母要做的更为他们的孩子比以前做的，在家里也不像一个车间。