that,转换过来是:
It could have been on her birthday that her parents gave her this DV as a prensent.
是强调句的格式,coule have been表示对过去的可能推测,完全可以转换为be动词形式.
that,转换过来是:
It could have been on her birthday that her parents gave her this DV as a prensent.
是强调句的格式,coule have been表示对过去的可能推测,完全可以转换为be动词形式.