present和at present分别代表什么如题~

present和at present分别代表什么如题~ right now和at present分别是什么意思? at present at the present time 和at present一个意思吗 in the present和at present有什么区别 in the present,at the present分别为什么意思?还有：in the present,at present,at the present这三个短语有什么区别?做题时应如何选择呢? Present simple和Present continuous分别是什么意思?如题 present Present. presently和at present的区别 at present 与 for the present 区别 用at present造句, at present怎么发音? at the present at present怎么读 at the present 用at present 造句 用at present造句