发布网友 发布时间:2022-07-22 11:41
共4个回答
热心网友 时间:2023-11-10 21:34
这是个重要的句型结构: it is + ( a/an )+ 形容词 + 名词 ( for sb.) + to do sth. 这里的it是形式主语,真正的主语是:to keep order in an important football, 所以句子也可以写成: To keep order in an importand football is a hard job fot the police.但为了避免头重脚轻就用: it's...的结构。所以不能换成 that/this热心网友 时间:2023-11-10 21:34
it指代后面的to keep order in an important football match,放在句首作形式主语,真正的主语是to keep order in an important football match,而为了防止主语过长,才用it代替。this和that没有it的这种功能。热心网友 时间:2023-11-10 21:35
z这里面的it是形式主语,不能用that或者this替换。句子的主语是 to keep order in an important football match,正常语序的说法是to keep order in an important football match is a hard job for the police但是主语太长,出现头重脚轻现象,所以用it来做形式主语,真正主语放在后面。热心网友 时间:2023-11-10 21:36
一般来讲,this that 多指代前文所提到的,而本句it指代后文的不定式短语。