例句：
It was not until morning that the sheer scale of the damage could be seen.
直到早晨才看清了损害的严重程度。
It was not until 1911 that the first of the vitamins was identified.
直到1911年才发现了第一种维生素。
It was not until 1974 that his ability to write gelled again.
直到1974年，他的写作才华才又得以发挥。
It was not until yesterday that I learned it.
顶昨天我才听说这件事。