t作形式主语,真正的主语为后面的不定式)(三)谓语谓语(Predicate)说明主语所做的动作或具有的特征和状态。动词在句中作谓语,一般放在主语之后。谓语的构成如下:1、简单谓语:由一个动词或动词短语构成。如:Hepracticesrunningeverymorning.ookoffatteno’clock.(三)谓语2、复合谓语:(1)由情态动词加动词原形构成。如:Youmaykeepthebookfortwoweeks.(2)由助动词加动词原形,现在分词,过去分词构成。如:DoyouspeakEnglish?Theyareworkinginafield.Hehascaughtabadcold.(3)由系动词加表语构成。如:Wearestudents.注意:谓语与主语在人称与数方面要保持一致。(四)表语表语(Predicative)用以说明主语的性质、特征、状态与身份,它一般位于系动词(如be,e,get,look,grow,turn,seem等)之后。表语一般由名词、代词、形容词、数词、副词、不定式、动名词、分词、介词短语及表语从句表示。例如:1.OurteacherofEnglishisanAmerican.(名词)2.Isityours?(代词)3.Theweatherhasturnedcold.(形容词)4.Thespeechisexciting.(分词)5.Threetimessevenistwentyone?(数词)6.HisjobistoteachEnglish.(不定式)7.Hishobbyisplayingfootball.(动名词)8.Themeetingisofgreatimportance.(介词短语)9.Timeisup.Theclassisover.(副词)10.Thetruthisthathehasneverbeenabroad.(表语从句)