Don't be so difficult.为什么加be,在英语中这是什么用法,请举例说明,如去掉be会变成什么意思,

Don't be so( ). don't be so Don't be so sad.. Don't be so lazy Don't be so stupid... don t be so sad mp3 don't be so翻译成中文 Don't try to be so affected. 是啥意思?Don't be so Don't be so prossessive是什么意思啊 Don't be so lifelike是什么意思 Don t be so rude ok是什么意思? don't be so ____(care) so don't be too cross with Don't be so 用于什么场合? Don't be so pathetic什么意思? Don’t Be So Hard On Yourself don’t be so 世界杯上有一句话是：Diego,don’t be so Forlan