2014年英语六级语法：until和till

2014年英语六级语法：until和till

2014年英语六级语法：until和till

肯定句：

　　I slept until midnight. 我一直睡到半夜时醒了。

　　Wait till I call you.　等着我叫你。

　　(在肯定句中可用before代替 Let's get in the wheat before the sun sets.)

　　否定句：

　　She didn't arrive until 6 o'clock.

　　她直到6点才到。

　　Don't get off the bus until it has stopped.

　　公共汽车停稳后再下车。

　　I didn't manage to do it until you had explained how.　直到你教我后，我才会做。

　　1)Until可用于句首，而till通常不用于句首。

　　Until you told me, I had heard nothing of what happened.

　　直到你告诉我以前，出了什么事我一点也不知道。

　　2)Until when 疑问句中，until要放在句首。

　　---Until when are you staying?　你呆到什么时候?

　　--- Until next Monday.　呆到下周一。

　　注意：否定句可用另外两种句式表示。

　　(1)Not until …在句首，主句用倒装。

　　Not until the early years of the 19th century did man know what heat is.

　　直到19 世纪初，人类才知道热能是什么。

　　Not until I began to work did I realize how much time I had wasted.

　　直到我开始工作，我才认识到了我已蹉跎了几多岁月。

　　(2)　It is not until… that…