$ sudo apt-get update
$ sudo apt-get install liblingua-en-inflect-perl 

liblingua-en-inflect-perl is installed in your system.

Make ensure the liblingua-en-inflect-perl package were installed using the commands given below,

$ sudo dpkg-query -l | grep liblingua-en-inflect-perl *

You will get with liblingua-en-inflect-perl package name, version, architecture and description in a table

liblingua-en-inflect-perl package basic information: