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notuntil与until的句型转换请大家举举例教教方法

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not until与until的句型转换
请大家举举例教教方法
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答案和解析
其实同not...until是一样的,只不过否定前移需倒装,Not until 5 o'clock did he come back home.=He didn't come back home until 5 o'clock.
until一直到...,not until直到...才.../...之前没做...
Wait until I call you.(一直等到我打电话给你)
He didn't come until 5 o'clock.(直到5点他才来/五点之前他没来)
People didn't find that kind of animals until 19th century