The sequence of grammar symbols derived from the beginning symbol of the grammar after several steps (including 0 step) is called( )。
A: language
B: Sentence
pattern
C: Sentence
D: Handle
A: language
B: Sentence
pattern
C: Sentence
D: Handle
举一反三
- In top-down grammatical analysis, analysis should start from ()。 A: sentence<br/>pattern B: sentence C: grammar start symbol D: handle
- A context-free grammar G consists of four parts: a group of nonterminals, a group of terminals, a start symbol, and a group of (). A: sentence B: sentence pattern C: word D: Production
- 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
- Given a grammar A→bA|ca, the grammar sentence is( )。 A: bba B: cab C: bca D: cba
- In English grammar, a prepositional phrase modifies an adjective in a sentence。（ ）