1.on the telephone 用法是什么?

1。on the telephone也可以是on the phone,用法：A给B打电话,B和C在一起,B就可以给C说A is on the phone2。主语+be ill in bed,比如：He is ill in bed。就是他卧病在床。又比如：He has been ill in bed for a week。他已经因病卧床一周了。3。可以接for或者that从句。比如：I am sorry for disturbing you。我很抱歉打扰你了。I am sorry that I did not tell you the truth。我很抱歉我没有讲真话。4。就是把天数加在中间哈。比如：ask for a three-day leave请三天假5。意思：注意,放精力在什么什么方面。比如,老师在上课时说Pay attention to the blackboard。注意看黑板。