itwasthat是什么基本句型

是强调句，例如：

1、So it was that he finally returned home.就这样，他终于回到了家。

2、It was that image of calm and discipline that appealed to voters.正是那个冷静、自律的形象打动了选民。

3、The pity of it was that the Americans didn't play cricket.可惜的是美国人不打板球。