【典例分析】

　　(1) The match was called off because of bad weather.

　　由于天气不好，比赛取消了。

　　(2) This problem calls for careful thought.

　　这个问题需要好好想一想。

　　(3) Then may I call on you at that time tomorrow?

　　那么明天那时我可以拜访你吗?