了了大哥
Someone is waiting for you at the door/in front of the door. 或者 is waiting for you 可以换成 is awaiting you at the door 在门边、在门口 in front of the door 在门口前 这两个的意思很像.
youjinjuan
Thereissomeonewaitingforyou.Thereissomeone后面加动词的话只能跟非谓语形式，即是：动词不定式，现在分词，过去分词。therebe里边be动词已经是谓语了，所以不能再有一个谓语形式的动词。
