hear是延续性动词;
hear
v.听见;听到;听;注意听;倾听;听说;得知;
第三人称单数: hears;
现在分词: hearing;
过去式: heard;
过去分词: heard
It was three weeks later that he heard the news.
三个星期之后他才听到这个消息。
Many's the time I heard her use those words.
我不止一次听她说过那样的话。
This is the first I've heard of it!
这可是我第一次听说这件事!