例:When you have finished the report, I will have waited for about 3 hours.(等你完成这份报告的时候,我就已经等了将近3个小时了。) 2. 现在进行时(be doing) 用法:现在正在进行的动作。 3. 现在完成时(have done) 用法: A) 表示动作到现在为止已经完成或刚刚完成...
The power and ambition of the giants of the digital economy is astonishing-Amazon has just announced the purchase of the upmarket grocery chain Whole Foods for $l3.5bn,but two years ago Facebook paid even more than that to acquire the WhatsApp mess...
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