英语六级高分必备500关键句(MP3+文本) 第67期:听力口语(67)
日期:2015-06-13 11:21

(单词翻译:单击)

第67句:

I didn't realize my mistake until I entered the office.

六级词汇讲解:
not...until句型使用广泛,表示“(不)·一直到”。其中,not可以省略。如:
Wait until tomorrow.等到明天。

六级考点归纳:
与not...until句型类似的是till,二者用法的区别比较微妙,需要特别注意:

当主句是否定句时,意思是“直到(某时)(某动作)才(发生)”,这时候常会使用not until的结构;如果将not until结构放在句首,那么主句要用倒装形式。如:
I ) He didn't go to sleep until 12 last night.
他昨晚直到12点钟才睡觉。
2 ) Not until we pointed out their fault to them did they realize it.
直到我们指出他们的错误,他们才意识到。

当主句是肯定句时,意思是“直到(某时某动作停止了)”,这时候常会使用till。如:
1) The students made much noise till the teacher came into the classroom.
直到老师走进教室,学生们才停止了吵闹。
2 ) Don't open it till your birthday.
等到你生日那天再打开。

另外,until可以放在句首,而till则不行。如:
1)Until they used up ail their money, the young couple were very happy.(√)
2)Till they used up all their money, the young couple were very happy.(×)

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