課本中不會教你的[T]662　the reason why…is that

662　the reason why…is that

◎ 這個句型表示“做……的原因是……”，why 引導的從句看作同位語從句，對reason作具體解釋，that引導表語從句，that不可省。這個句型可簡化為：The reason is that…，但不可說The reason is because…。

The reason why he didn't come to the party is that his son fell ill. 他沒有來參加聚會的原因是他兒子病了。

The reason why he can't stay is that he has something urgent to do. 他不能留下來的原因是他有些急迫的事情要做。

The reason is that she thought she was unfit for it. 理由是她認為她不是很能勝任。