present at 与 be present at 有什么区别? 怎么用 什么时候不能互换?

be present at意思+++++++++++++ present at 与 be present at 有什么区别? 怎么用 什么时候不能互换? at present 与 for the present 区别 at the present time与at present 的区别 transport will be much better at present Applicants must be present at event to be considered at present To be present to another you should be present to yourself at first.翻译 有关be present at的用法The experts present at the meeting(出席会议的)were from different parts of the world.为什么 present at the meeting前不用加be动词,不是说be present 有关be present at的用法The experts present at the meeting(出席会议的)were from different parts of the world.为什么 present at the meeting前不用加be动词,不是说be present at the present与Nowadays区别与联系火速!谢谢! all the people present at the meetig were.be present at ：出席这是什么的修饰啊,练习册P20 at present与right now的区别谢谢了, he---------- (not be )at home at present完形填空,好的赏分 The president ordered that the secretary be present at the meeting.为什么用be而不是is You will be doing something that at present no one is doding.的will be be present at or be affected by something; feel an emotion Tom said he would be back _.A.at present B.for the present C.presently D.for a moment