如:2011天津阅读理解A篇 You have no right to entertain friends in a family home as some families feel it is an invasion of their privacy。(it指“在房东家里款待朋友”这件事)
★it作形式主、宾语,如: (2011天津.5)Although regular exercise is very important, it’s never a good idea to exercise too close to bedtime。(it作形式主语)而在上面2011天津.1和 2007天津.1两题中,it均作形式宾语。
★it用于强调句型“It is/ was +被强调的部分+ that/who + 句子剩余部分”,如:2011天津完型填空It was years later that I finally understood what role modeling played in your life。(强调时间状语years later)
★it在固定句式中,如:2011天津阅读理解B篇 It always struck me that when you’re looking at a big challenge from the outside it looks huge, but when you’re in the midst of it, it just seems normal. (It struck sb that…是英语中一个很有用的句式,其意为“某人突然感到(觉得)……”,后三个it均指代challenge。)
★It is + 时间 + 连词 (that,since,before,when)方法:第一步,优先假定选that,则该句子为强调句,去掉it is 和 that 看剩下的句子是否在意思和语法上均完整。如果完整,则假定成立;反之,不选that。第二步,若为时间点,则选when,如half past two;若为时间段,则考虑since和before。其中before翻译成“才,就”,since译为“自从”。