in的过去分词形式，hand

过去分词是handing in

第三人称单数： hands复数： hands现在分词： handing过去式： handed过去分词： handed

例句：

Those children need a firm hand to make them behave.

那些孩子得严加管教。

Do you want me to come along and hold your hand?

你想让我过去帮你一把吗

Fewer people write with their left hand than with their right.

用左手写字的人比用右手的人少。

过去分词是handed in，例如：

1、He has handed in his notice.他递交了辞呈。

2、All eighty opposition members of parliament have handed in their resignation.议会中80名反对党成员全部递交了辞呈。

2、She handed in her resignation and was put on three months' gardening leave.她交上辞呈后，却得到了三个月的园艺假。