解析：By the time you get to New York, I_考试试题_专四专八

【单选题】 By the time you get to New York, I______ for London.
A．would be leaving
B．am leaving
C．have already left
D．shall have left

网考网参考答案：D
网考网解析：
by the time 可以引导一个时间状语从句，相当于before。从句中使用一般现在时时，可表示一般将来的动作，因此主句一般要使用将来完成时。例如：I shall have left by the time you return．等你回来时我可能已经走了。The railway will have been completed by the time they come next time．那条铁路将在他们下次回来前建成。查看试题解析出处>>