"Not until I turned off the TV and went to bed did I realize how late it was."

这句话的意思是：直到我关掉电视上床睡觉时，我才意识到已经多晚了。这里使用了not until引导的时间状语从句，强调了某个动作或状态的发生时间。

用"not until"造句如下：

1. Not until I began to work did I realize the importance of self-reliance.

2. Not until I retired from teaching did I start to enjoy my life.

3. Not until I reached the age of 30 did I start to take control of my career.

以上句子中，"not until"引导了一个位于句首的时间状语从句，表示"直到…才…"的意思。在第一个句子中，"I began to work"是主句，"I realized the importance of self-reliance"是从句。其他句子与此类似，只是主句和从句的成分有所不同。

以下是使用“not until”造的句子以及变化：

原句：Not until yesterday did I finish my work.

变化1：Not until I had finished my work did I realize how much time I had wasted.

变化2：I didn't start my work until yesterday.

变化3：It was not until yesterday that I finished my work.

以上句子使用了“not until”引导的倒装句式，强调了某个动作或状态的发生时间。可以根据需要选择不同的句式和表达方式。