It was only by yeasterday that had We known this matter
It was ...that 为强调句式
only by yeasterday ,had we known this matter 为倒装
英语翻译直到昨天我们才知道这件事(1)用倒装句（2）用强调句
It was only by yeasterday that had We known this matter
It was ...that 为强调句式
only by yeasterday ,had we known this matter 为倒装