Verbs of Perception refer to those verbs‏‎ which are used to talk about sensing:

see/look/watch/notice/observe
hear/listen to
taste
smell
touch/feel
sense in general

These verbs can be used in different ways and have certain grammatical conditions attached to them.
Continuous (Progressive) Forms

Used in continuous forms (aka progressive forms), these verbs indicate the subject is focusing on a particular…