系动词与形容词构成系表结构.首先,连系动词分为三类：be 动词,感官动词,趋势动词.　　1) Be 动词：am,is,are,was,were　　2) 感观动词：sound,look,keep,taste,feel,smell　　3) 趋势动词：appear,become,grow,get,t...