「一直到…為止」vs.「直到…才」 · 含倒裝與強調句型
動作從頭一路持續到那個時間點才結束，句子是肯定的。
waitstayworksleeplive
studykeepremainbe opentalk
動作只發生「一瞬間」，不能持續，所以主句必須加否定。這是最常考的一條。
go to bedleavestartarrivecome
knowrealizefindstopreceive
buyfinishget married
公式：Not until ＋ 子句／時間 ＋ 助動詞 ＋ 主詞 ＋ 原形動詞。
倒裝的只有「主句」，until 子句維持正常語序；主句不再加 not。
公式：It was not until ＋ 被強調的時間 ＋ that ＋ 正常語序。
that 之後不倒裝、不能換成 when、也不再加 not。
until / before / when 引導時間子句時，即使講未來，也要用現在式。
| 常見錯誤 | 正確寫法 |
|---|---|
| I knew it until yesterday. | I didn't know it until yesterday. |
| Not until he came, I left. | Not until he came did I leave. |
| It was not until then that did I know. | It was not until then that I knew. |
| I'll wait until he will come. | I'll wait until he comes. |
| We must arrive until it gets dark. | We must arrive before it gets dark. |