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- 他不知道如何玩的高兴.He doesn't know how to have a good time.
- 他不知道如何在文档中输入分数线，就去问同事。He doesn't know how to insert the cut-off line in the file and had to ask his colleagues.
- 他不知道如何恰到好处地回答,就笑了笑把眼光转向别处。He was not sure what would be the appropriate reply, so he smiled and looked away.
- 不知道be insensible of
- 当他同意担任该社的秘书时，他不知道他将做许多无报酬的工作。He did not know what a lot of unpaid work he was letting himself in for when he agreed to become secretary of the society .
- 玛丽不知道如何教育她的孩子独立自尊。凡事都是她自己替他们做了。Mary has no idea how to bring up her children to be independent and self-respecting; she waits on them hand and foot.
- 就好象我们去玩的一样，茫茫的人海中我已经不知道骑的有多么的累了，但我还有坚持！Resembles the dissimilarity which we plays, in the boundless hugecrowd I already did not know rode has has been tired, but I also hadpersisted!
- 他不知道如何回这封信。He was puzzled how to answer the letter.
- 他不会不吭声，假装什么也不知道。He'll lie low and pretend he knows nothing about it.
- 他不知道如何着手做这项工作。He doesn't know how to set about doing the job.
- 既要照顾家庭又要全天工作，我不知道她是如何对付的。I don't know how she copes with looking after her family and doing a full-time job.
- 他不知道用什么话表示他失望的心情。He was at a loss for words to express his disappointment.
- 他不知道如何收拾这个烂摊子。He did not know how to straighten out this mess.
- 他不知道分科，也不懂骨肉发病说；he ignored groups and consistency;
- 他不知道如何使音响的音量增大。He doesn't know how to turn up the volume on the hi-fi set.
- 他不知道怎样才跳得出这左右为难的窘境。He did not see any way out of his dilemma.
- 因为我们不对他说，所以他不知道。We didn't tell him. So he didn't know.
- 他耸耸肩，说他不知道，也不在乎。He shrugged his shoulders,saying he didn't know and didn't care.
- 我不知道如何能在现实里也如此的随心所欲,现实让人苦恼。I don't know how to set me free to live, I've been roaming to find myself.
- 他不知道可以达到如此快乐的境地。He didn't know it was possible to reach such heights of happiness.
