64.强调句否定前移It is not until that

强调句否定前移
It is not until...that句式
直到……才
例如： It wasn't until the teacher had told him that he realized his mistake.

直到老师告诉他的时候，他才认识到他的错误。
It was not until the man took off his glasses that the boy recognized his father .

直到那个男子摘掉眼镜，这个男孩儿才认出是他的父亲。