not？“not”是什么意思

not until的主句用一般将来/过去将来，从句用一般过去时/一般现在时。not...until引导时间状语从句，从句不能用将来时，主句是一般将来时，从句用现在时。主句是祈使句，从句用现在时。主句是过去时，从句时态一致。主句用一般将来时。

not unti扩展资料:

1、not until 后边一般是时间点，如：

例句：It was not until midnight that it stopped raining.

释义：直到半夜雨才停下来。

例句：It was not until five o'clock in the afternoon that they finished their work.

释义：直到下午五点他们才完成工作。

2、 not until 后边也可以是陈述的句子，如：

例句：It was not until he came to China that he realized the great change in recent decades.

释义：直到他来到中国，他才意识到最近几十年的巨大变化。

not until 的主句从句的时态：

1、一般过去时：

例：I didn't leave the house until he came back.

释义：直到他回来我才离开家。

2、过去完成时：

例：I hadn't tried coffee before until he brought me some yesterday.

释义：直到昨天他给我带了一些咖啡，我才喝过咖啡。

3、一般现在时：

例：Don't leave until I come back.

释义：在我回来之前不要离开。

4、现在完成时：

例：I haven't thought that until you mentioned.

释义：直到你提到我才想到那件事。

5、一般将来时：

例：I won't leave until you do.

释义：你不走我就不走。

6、将来完成时：

例：I won't have finished it before Sunday until you guys leave me alone.

释义：除非你们让我一个人呆着，否则星期天之前我是不会完成的。