2013
高考英语:二轮专题
学案(14)(训练题配答案或解析) 专题探究 专题探究:it,one和that的指代用法专题详解: it可以用来:1.代替前文或后文所提到的事物(单数或不可数)。 eg: i bought a new camera yesterday but i don't bring it with me now. 我昨天买了一台照相机,不过现在我没有(把它)带在身边。 magnetic field does exist though we can't see it.尽管我们无法看见.但磁场的确存在。2.代替前面整个句子。 eg:they say there is ljfe on the mars.but people have to prove it. 他们说火星上有生命