summon(s)

1.summons是单数形式，不是复数形式，它的复数形式是summonses。例如：He received a summons to appear in court. 和He has received several summonses in the past few months.

2.summon是动词，不可用作名词。summons也可以用作动词，但只用作“以传票送达（某人）解”，例如：The officer will summons several persons to appear. 和We were summonsed yesterday.

summon不及send for通俗。summon用作summons解也可以。