____ gestures while learning L2 new words or grammars can lead to the best learning outcomes.

中国大学MOOC: Universally found in the grammars of all human languages, syntactic rulesthat comprise the system of internalized linguistic knowledge of a language speaker are known as linguistic competence.

Among<br/>the four formal language grammars, type-1 grammar is also called ()<br/>grammar. A: Phrase structure grammar B: Context-free grammar C: Context-related grammar D: Regular grammar