英语学习·日积月累-096_日积月累

riddle
谜，谜语 

例句：
that painting is still a riddle to us.
那幅画对我们来说仍然是个谜。

play it by ear
随机应变
 
例句：
facing his enemy, he had to play it by ear.
面对敌人，他只有随机应变了。

thank you for having us.
谢谢你请我们做客。 

对话：
a: i'm afraid i've got to go now. thank you for having us. we had a good time.
b: it was a pleasure.
　　　　　　　　 　　　
a：恐怕现在得走了，谢谢你邀请我们做客，我们玩得很开心。
b：你们玩得好，我也很高兴。