not...until基本含義是“直到...才”。
I did not go home until my mother called me.
我直到我媽媽打電話給我才回家。
Not until Father came back did we begin to have supper last night.
昨晚直到父親回來，我們才開始吃晚飯。
not until的倒裝與強(qiáng)調(diào)結(jié)構(gòu)，not until通常與非延續(xù)性動詞連用，強(qiáng)調(diào)主句所表示的狀態(tài)或情景從until所表示的時(shí)間才發(fā)生，主句必須是否定句。
1、當(dāng)Not until位于句首時(shí),句子要倒裝。其結(jié)構(gòu)為:Not until+從句/表時(shí)間的詞+助動詞+(主句)主語+謂語
（1）Not until the teacher came in did the students stop talking.
直到老師進(jìn)來學(xué)生們才停止講話。
（2）Not until next week will the sports meet be held.
直到下周才開運(yùn)動會。
2、not until的強(qiáng)調(diào)結(jié)構(gòu)為:It is / was not until+從句/表時(shí)間的詞+that
（1）It was not until the teacher came in that the students stopped talking.
（2）It is not until next week that the sports meet will be held.