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- Do you know why Mr Brown has a heavy heart? 你知道为什么布朗先生心情不愉快吗?
- I do not know why acids eat in metals. 我不知道酸腐蚀金属的原因。
- I don't know why she is hostile to me. 我不知道她为什么对我抱有敌意。
- Do you know why she is so strange to him? 你知道她为什么对他如此冷淡吗?
- I want to know why Tom answers a letter for me. 我想知道为什么汤姆没有给我回信。
- She's got a down on me; I don't know why. 她很讨厌我,我不知道为什麽。
- I don't know why they see fit to leave so suddenly. 我不明白,他们为什么决定突然这样走掉。
- I don't know why his temper has soured. 我不知道为什么他的脾气变坏了。
- She knows why the metal is the good conductor. 她知道金属为什么是好的导体。
- I don't know why Fred is always secretive as regards his family. 我不知道为什么凡涉及到他的家,弗雷德总是保密。
- We don't know why the teacher seemed to have it in for that boy. 我们不知道为什么老师好像和那个男孩过不去,老找他麻烦。
- I wonder whether you will familiarize us with your technical know - how. 我想知道你们是否愿意让我们熟悉技术诀窍。
- I don't know why but I'm feeling rather blue today. 我不知道为什么今天总觉得心情不好。
- I do not know why acid corrodes the metal. 我不知道酸为什么腐蚀金属。
- He was absent yesterday. Do you know why? 昨天他没到,你知道为什么吗?
- Do you know why he suddenly honied to you? 你知道他为什么突然对你变殷勤起来了吗?
- Nobody knew why the attendance had dropped away in recent months. 没有人知道为什么近几个月来出席人数越来越少。
- Do you know why the river narrows here? 你知道为什么河道在这儿会变窄吗?
- I don't know why nobody had me in that day. 我到现在也搞不清楚为什么在那天竟然没有一个人肯雇用我。
- I don't know why she ritzed her friends recently. 我不知道她近来为什么对朋友们很冷淡。