求一般现在时的引导词及句型!
问题描述：
求一般现在时的引导词及句型!
答
引导词：never, sometimes,often, usually,always, every week（day,year,month．．．）,once a week,on Sundays,etc．句型：主+Be动词（am, is, are）+表语.否定式是在Be动词后加not.疑问句是将Be动词提前到句首（...