-we should have been more careful not to break the ball.-that doesn‘t matter much.unluckily,it will be a long time_____we have another.a.until b.before c.sinceuntil 和 before在这里有什么区别?
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/23 10:32:17
-we should have been more careful not to break the ball.-that doesn‘t matter much.unluckily,it will be a long time_____we have another.a.until b.before c.sinceuntil 和 before在这里有什么区别?
-we should have been more careful not to break the ball.
-that doesn‘t matter much.unluckily,it will be a long time_____we have another.
a.until b.before c.since
until 和 before在这里有什么区别?
-we should have been more careful not to break the ball.-that doesn‘t matter much.unluckily,it will be a long time_____we have another.a.until b.before c.sinceuntil 和 before在这里有什么区别?
固定搭配
It will be a long time before / It was(a) long(time) before 很长一段时间后
主句是持续性谓语动词时,肯定,否定都可以,但意义完全不同,肯定表示动作终止,而否定表示动作开始. 1). We discussed the problem until/before he came back.
我们一直讨论到他回来.
2). We didn’t discuss the problem until he came back.
我们一直等到他回来才讨论问题.
放于句首时用until.
Not…until…句型尽管在某些情况下可与before互换使用,但在强调句中一般仍用until;