一个关于"until"的英语问题Myuncledidn'tmarryuntilhewasfifty.Sohissonisonlytenyearsoldnow.中据说是用的"notuntil"句型Mr.Smithmarrieduntilhewasforty-five.但是为什么这句中不用这个句型呢?希望可以说

Question

一个关于"until"的英语问题
My uncle didn't marry until he was fifty.So his son is only ten years old now.
中据说是用的"not until"句型
Mr.Smith married until he was forty-five.但是为什么这句中不用这个句型呢?希望可以说出相关知识点,

Answer 1

until
prep.
(=to the time of)直到...时, 到...为止
[常用在否定句中](=before)在...以前; 直到...才; 不到...(不)
until his death
直到他死
until four o'clock
直到四点钟
He did not go until night.
他直到夜里才走.
It was not until yesterday that I noticed it.
直到昨天我才注意到这件事.
习惯用语
unless and until=until