"Since young children have few monetary resources they control independently, it is the basic approaches and skills which are modelled, discussed and demonstrated by parents that are likely to be influential levers, breeding efficient habits and practices," it says.
报告称:“由于年幼儿童能够独立支配的金钱资源很少,因此,父母示范、讨论和讲解的基本方法与技能,很可能才是发挥重要影响的关键因素,有助于培养高效的习惯和做法。”
该结构符合 "it is/was + 被强调成分 + that/who + 其余部分" 的强调句形式。被强调的成分是 "the basic approaches and skills which are modelled, discussed and demonstrated by parents"。去掉 "it is ... that" 后,可还原为 "The basic approaches and skills ... are likely to be influential levers",句子主干仍然完整,因此这里的 it 不是形式主语,而是强调句中的引导成分。