1/
– A language is a structured system of communication used by humans, based on speech and gesture
(spoken language), sign, or often writing.
– There are three knowledge including knowledge of the Sound System, knowledge of Words and
Knowledge of Sentences and Nonsentences.
2/
Difference:
A spoken language can be understood as an auditory and a vocal language.
A sign language is a language where gestures and facial expressions are used in order to convey
information.
Similarity:
Both languages consist of complex structural elements and can be used to convey information.
3/ There are four kinds of grammar:
