invitation要加s吗

invitation 复数形式需要加s , 为invitations。

意思是(口头或书面的)邀请；邀请；获得邀请；请柬；请帖。

例句：

Have you ordered the wedding invitations yet?

你订制婚礼请帖了吗？

She had wangled an invitation to the opening night.

她弄到了一张首映之夜的请柬。