by the time”相当于一个连词,可以用来引导一个时间状语从句。其具体用法如下:一、如果从句中的谓语动词是一般过去时,表示“过去的某一个时间点”,则

ppt格式-11页-文件0.04M-By the timeby the time意为到时候(为止),是一个介词短语,在句中经常起连词作用,引导时间状语从句。它的主要用法如下: 1 如果从句

By the time I got to the airport, the plane .[ ]A. took offB. has taken offC. had taken off-九年级英语-魔方格