内容介绍：系动词系动词+表语充当谓语动词情态动情态动+动词原形助动词助动词+动词原形实义动独立充当谓语系动词常接形容词作表语主谓一致be 动词be+adv.+adj―如何是‖“保持”“变化”become,seem,turn,grow,get,keep,stay感官动词look,sound,taste,smell,feel情态动词意思答语表示推测may 答语:肯定 Certainly./Sure./Yes,y