hear的过去式和过去分词是什么?

　　I've heard about people like you.

　　我听说过像你这样的人。

　　He had a hard job to make himself heard.

　　他好不容易才使别人听见他的声音。

　　I still don't think we've heard the full story.

　　我还是认为我们未了解全部情况。

　　The last I heard he was still working at the garage.

　　我听到的.最新消息是他还在汽车修理厂工作。

　　Every time she heard his name, she dissolved into tears.

　　每当听到他的名字时，她都禁不住泪流满面。