guard有几个词性

guard有两个词性，名词和及物动词词性。

n.警卫;保护;保卫;看守;卫兵;警卫员;(统称)卫兵;警戒;

vt.警卫;守卫;保卫;看守;监视;

例句

A guard was posted outside the building.

建筑物外设了一名警卫。

词组

guard against

提防；防范

变形

现在分词guarding过去式guarded

过去分词guarded复数guards

第三人称单数guards。