61句法分析与用作翻译的理论基础 举例:如果有语法 <SENTENCE> : =<SUBJECT> <VERBPHRASE> <SUBJECT> : =Jone Mary <VERBPHRASE> =<VERB><O <VER> ::=eats drinks < OBJECT>∷= wine chee (5) 可以把句子"Mary eats cheese"的推导表示如下: SENTENCE><SUBJECT> <VERBPHRASE> →Mary< VERBPHRASE> →Mary<vERB>< OBJECT> → Mary eats< OBJECT> → Mary eats cheese 2021/2/23 第6章句法(语法)与语义理论及分析2021/2/23 第6章句法(语法)与语义理论及分析 10 举例:如果有语法 <SENTENCE> ::=<SUBJECT><VERBPHRASE> (1) <SUBJECT> ::=Jone│Mary (2) <VERBPHRASE>::=<VERB><O (3) <VER> ::=eats│drinks (4) <OBJECT> ::=wine│chee (5) 可以把句子"Mary eats cheese"的推导表示如下: <SENTENCE>→<SUBJECT><VERBPHRASE> →Mary<VERBPHRASE> →Mary<VERB><OBJECT> →Mary eats <OBJECT> →Mary eats cheese 6.1 句法分析与用作翻译的理论基础 下页