In abstracts,subjectless sentences are abundantly used in Chinese while subject is always used in English; For key words of an abstract,both verbs and nouns are used in Chinese while only nouns are used in English; 时态 -Passive voice used a lot in English while active voice is dominant in Chinese Tense:lexical means used in Chinese instead of grammatical meansIn abstracts, subjectless sentences are abundantly used in Chinese while subject is always used in English; For key words of an abstract, both verbs and nouns are used in Chinese while only nouns are used in English; 时态 -Passive voice used a lot in English while active voice is dominant in Chinese Tense: lexical means used in Chinese instead of grammatical means