if you would wait for a few minutes ,he would be glad to see

If you would wait for a few minutes,如果当时你再等几分钟,（条件状语从句,用过去将来时表示,代表不可能发生的虚拟条件从句.就跟 If I were you,一样）.
he would be glad to see you.他会乐意见你的.（实际上表示不会发生了.）
如果：If you wait for a few minutes,he will be glad to see you.如果你等一下,他会见你的.
（用一般现在时态,一般将来时态表达,代表此事有可能发生.）
If there were not so many people at the party?如果当时聚会上没有那麽多人呢?
用过去时态表达,代表这是不可能发生的虚拟条件句.
如果：If there are not so many people at the party?如果聚会没有那么多人参加呢?
用一般现在时态表达,代表这是有可能发生的虚拟条件句.