be present at和be present in都对吗?若都对请分别给出一个例句,并解释其区别

be present at意思+++++++++++++ transport will be much better at present Applicants must be present at event to be considered To be present to another you should be present to yourself at first.翻译 attend和be present at有什么区别都当出席讲时有什么区别 be present at和be present in都对吗?若都对请分别给出一个例句,并解释其区别 present at 与 be present at 有什么区别? 怎么用 什么时候不能互换? be presented和be present的区别RT 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 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 be good at 和 be good with be well in和be good at be weak in 和be weak at 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 Everyone must be present at the meeting.情态动词后要用动词原形,所以是must be Everyone must be present at the meeting.情态动词后要用动词原形,所以是must be请问present 这里是形容词吗?