portend的第三人称单数（三单）为：portends...

vt.预示，预兆，给…以警告，预告...

Overcast skies portend a rough day for boats on Iceland's Lake Myvatn.阴云密布的天空为冰岛米湖上的船只预示了狂风暴雨的一天.What do these strange events portend?这些奇怪的事件预示着 什么 ?The change did not portend a basic improvement in social condition...

portend的一般过去时为：portended...

What do these strange events portend?这些奇怪的事件预示着 什么 ?Not, perhaps, a great portend for a new generation of robots.但是在现实中, 这可能预示着下一代的新机器人.Overcast skies portend a rough day for boats on Iceland's Lake Myvatn.阴云密布的天空为冰...

portend的现在完成时为：portended...

portend的音标：portend的英式发音音标为：[pɔ:'tend]portend的美式发音音标为：[pɔr'tend]...

portend的现在进行时为：portending...