锯澜互慌仲写绎衰斡染圾明将呆则孰盆瘸砒腥悉漠堑脊髓灰质炎(讲课2019)脊髓灰质炎(讲课2019)
1)状态系动词 用来表示主语状态,只有be一词,例如: He is a teacher(is与补足语一起说明主语的身份。) 2)持续系动词 用来表示主语继续或保持一种状况或态度,主要 有keep,rest, remain,.stay,lie, stand,例如 He always kept silent at meeting. This matter rests a mystery.此事仍是一个谜。 3)表像系动词 用来表示看起来像"这一概念,主要有sem, appear,look,例如: He looks tired.他看起来很累。 He seems(to be) very sad.他看起来很伤心
动词的种类
说明:同一动词有时可用作及物动词,有时可用 不及物动词。例如: She can dance and sing (sing在此用作不及物动词。) She can sing many English song (sing用作及物动词。) 4)根据是否受主语的人称和数的限制,可分两类 分别是:限定动词( Finite Verb)、非限定动词 ( Non-finite Verb)例如: She sings very well (sing曼主语She的限制,故用第三人称单教形 式 sings。) She wants to learn English well ( to learn不受主语she的限制,没有词形变化, 是非限定动询。)
5.2什么是助动词 1)协助主要动词构谓语动词词组的词叫助动词 ( Auxiliary verb)。被协助的动词称作主要动词 (MainⅤerb)。助动词自身没有词义,不可单独使 用,例如: He doesn“ t like English.( doesn't是助 动词,无词义;Iike是主要动词,有询义) 2)助动词协助主要动词完成以下功用,可以用来 a.表示时态,例如: He is singing. He has got married b.表示语态,例如: He was sent to England C.构成疑问句,例如: Do you like college life? Did you study english before you came here? d.与否定副词not合用,例如:Idon" t like hin e.加强语气, Do come to the party tomorrow evening He did know that.3)最常用的助动词有:be,have,
