would+动词原形,比如would miss是什么语法形式啊,现在时?

没错.其实一个从句就两个动词,一个是主句的,用过去时.另外一个是从句的,跟在would后面,用原型.

要根据具体情况判定,下面是would的6种基本用法,
楼主参考一下：
1.（will 的过去时,表示过去将来）将；会：He said he would leave for London tomorrow. 他说他明天去伦敦.
2.（表示推测）大概；也许：
If she promised to come, she would be here already. 如果她答应要来,那她也许已经在这里了.
3.（委婉表示意愿）愿意：
I would like a cold beer. 我想来一杯冰镇啤酒.
4.（用於非真实条件句中,表示本来可能）：
If you told me earlier I would have come. 如果你早些告诉我,我就会来了.
5.（表示习惯）老是；总会
：He would get up late Sundays. 星期天他总是晚起床.
6.（表示婉转的请求）请：
Would you please open the door? 可以请您开一下门吗?
另外,还有习惯用语：
would rather 宁愿；宁可：
I would rather have a picnic. 我倒宁愿去野餐.

一、"would+动词原形"表示过去将来时
"would+动词原形"构成过去将来时,常表示根据计划或安排即将发生的事.
例1：He said he would come to see me.他说他要来看我.
例2：He told me he would go to Beijing.他告诉我他将去北京.
二、"was /were+going to+动词原形"表示过去将来时
"was /were+going to+动词原形"也可表示根据计划或安排即将发生的事.
例1：She said she was going to start at once.她说她将立即出发.
例2：I was told that he was going to return home.有人告诉我他准备回家.
"was /were+going to+动词原形"还可表示根据当时情况判断有可能但不一定会发生某事.
例：It seemed as if it was going to rain.看来好像要下雨.
三、某些动词的过去进行时可表示过去将来时
come,go,leave,arrive,start等严格按照时间表发生的表起止的动词可用过去进行时代替过去将来时.
例1：He said the train was leaving at six the next morning.他说火车第二天早晨出发.
例2：She told me she was coming to see me.她告诉我她要来看我.

看下还有什么疑问

would+原形动词用于表示过去的意愿、意向等.would(握的)
例句：
I told him to be careful,but he wouldn't listen to me.
我叫他小心,但他就是不听.
would+原形动词表示过去的习惯性的动作.
例句：
Sometimes we would go to the countryside.
有时候我们会到乡下去.would not+原形动词表示坚决拒绝.
例句：
He would not let me enter the room.
他拒绝让我进这个房间.
Would you+原形动词表示有礼貌和婉转的请求.
例句：
Would you pass me the bottle?
请你递给我那个瓶子好吗?
would用于虚拟语气句中.
例句：
If I were young,I would go traveling.
要是我年轻,我会去旅行.
含would的习惯用语.
would rather+原形动词表示宁愿.
would rather+原形动词...than+原形动词表示宁愿...而不愿.
would like+原形动词表示愿意、愿望、喜欢.
例句：
I would rather go to school than stay at home.
我宁愿上学也不愿待在家里.
例句：
He would like to hear your opinions.
他愿意听听你的意见.

据我的老师的说法,前者是提前就做好的打算,是有计划有安排的；后者是临时做的决定,没有事先计划好的,只是一般意义上”将要做某事“的事实.

你说的动词原形指的是 句子中的 be 而不是 delighted
句子中的 be 符合你说的用法
delighted是形容词,在句中