To be honest 可以用在句首吗?

To be honest 可以用在句首吗? 用be honest with,be honest in,to be honest或honest填空 to be honest Nightmare to be honest to be honest是什么意思 求常用的用在句首的短语,如in fact,to be honest等, It pay to be honest It pays to be honest to be honest还是honestly? to be honest make an honest living be honest to sb 造句. to be honest为什么要用be?还有be frendly with,等等,为什么都要加be? being honest和to be honest的区别