老外最常用的英文短语 第280期:know when

　　释义：

　　know when (where) 知道……

　　这是利用各种疑问词变成……I know what/why/how 主语+动词的形态，比前文中提到的 know that 主语+动词的使用频率更高。只不过从句并不是倒序的形态，而是“疑问词+主语+动词”。尤其 You don't know+疑问词主要用来抱怨、指责对方。具体例子为 You don't know what it's like to+动词（你不知道这是什么）。

　　例句：

　　I know exactly what you need.

　　我很清楚你需要什么。

　　I don't want to be alone. You know what I'm saying?

　　我不想一个人待着。你明白了？

　　We never know when our life is going to change.

　　我们永远都不知道人生什么时候会改变。

　　I think I know where they came from.

　　我好像知道他们是从哪儿来的。

　　I don't even know how I feel about her yet.

　　我都不知道对她是什么感觉。

　　Do you know when the party is?

　　你知道聚会几点开始吗？

　　Do you know where the train station is located¹?

　　你知道火车站在哪儿吗？

　　You don't know that. You don't know me anymore.

　　你根本就不知道，你再也不懂我了。

　　You don't know how much I love you.

　　你不明白我有多么爱你。

　　对话：

　　A: Do you know when the train arrives?

　　你知道火车几点到吗？

　　B: It's scheduled² to be here at 7 a. m.

　　应该是早上 7 点。

　　A: Do you know where the bookstore is?

　　你知道书店在哪儿吗？

　　B: You can't miss it. It's at the end of this street.

　　沿着这条路一直走下去，你肯定能看见。

　　A: I can help find your cat.

　　我可以帮你找到猫。

　　B: Thanks. I don't know where she is.

　　谢谢。我不知道她现在跑到哪里去了

1 located   

adj.处于，位于

参考例句：

• The mechanic located the fault immediately. 机修工立即找到了出故障的地方。
• a small town located 30 miles south of Chicago 位于芝加哥以南30英里的一个小镇

2 scheduled   

adj.规定价格的；预定的；排定的；严格按时间表生活的vt.将…列入计划（或时间）表

参考例句：

• The meeting is scheduled to commence at noon. 会议定于午间召开。
• The Prime Minister is scheduled to arrive at noon. 首相定于中午到达。 来自《简明英汉词典》