it is not until ...that...用法

it is not until ...that...用法

本句型意为“直到.才."其中包含了强调句式it is .that从句.例如it was not until I finish my homework that I was admit to play computer games.直到我我完成我的作业我才被允许玩游戏.强调成分为not until 引导的句子

没有这么用的。not until前面肯定要有一些东西的，比如：
He didn't leave until his friend came back.
not until表示直到……才……
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