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- 我不知道他为何拒绝了.I wondered why he had refused.
- 他这场电影看了好几遍了，我不知道他究竟喜欢这个电影的什么。He saw the film several times; I wonder what on earth he saw in it.
- 我不懂有关当局为何拒绝我的建议。I don't see why the authorities concerned turned my suggestion down.
- 我不知道他为何面带怒容。I wonder why he is wearing an angry scowl.
- 这话太难理解了,我不知道他在说什么。It's gibberish. I have no idea what he's saying.
- 我不知道为什么我们的建议被拒绝了。I don't know why our suggestions have been brushed off.
- 我不知道他为什么因企图报复而伤了自己。I don't know why he cut off his nose to spite his face.
- 妈妈，爸爸的生日快到了。我不知道送给他点什么好。你有什么建议？Mom, Dad's birthday is coming up. I don't know what to give him. Do you have any ideas for a gift?
- 我在我们家附近见过他，但我不知道他的姓名。I've seen him round the neighbour-hood but I don't know his name.
- 我不知道他要亲自去还是派他儿子去。I wonder whether he will go himself or he will send his son.
- 他如何[为何]做的, 这问题算是把我难住了（我不知道）.It beats me (ie I don't know) how/why he did it.
- 我不知道他是否感觉到我不愿和他走在一起被人看到。I wonder if he sensed my reluctance to be seen with him during our walks.
- 我不知道他是谁，是哪里人，这是事实。I don't know who he is or where he came from and that's a fact.
- 我不知道他会不会同意让你独自驾机单飞。I don't know if he will homologate you to pilot a plane alone.
- 得知那一天他和你在一起,看着照片中的他,我不知道为何我感受好多了,真的。Knowing he was with you that day, and seeing him in that photograph, I don't know why it makes me feel better, but it does.
- 我不知道他下一步将决定采取什么行动。I wonder what move he will decide to make next.
- 乔治整天受妻子的责骂，我不知道他是如何能容忍的。I don't know how George tolerates his wife; he's hen-pecked from morningto night.
- 我不知道他是否真的已经去职，那也许只是传闻。I don't know if he's really leaving his job; it may only be hearsay.
- 我不知道他的父母是如何忍受他的怪异行为。I do not know how his parents put up with his antics.
- 我不知道他是如何设法找到我们的。How he managed to find us is beyond me.
