整个句子主语从句
Therefore的后面是可以加逗号的,意思是:因此.它不影响句子的结构.
it是形式主语,真正的主语是to make sure the place you are going is dog-friendly.
再看the place you are going is dog-friendly.
定语从句 you are going修饰the palce.
整个句子主语从句
Therefore的后面是可以加逗号的,意思是:因此.它不影响句子的结构.
it是形式主语,真正的主语是to make sure the place you are going is dog-friendly.
再看the place you are going is dog-friendly.
定语从句 you are going修饰the palce.