关于英语语法中要不要加been的问题,以及should的问题
一、Having（been） taught thousands of students since I became a university teacher,Merry impressed me most.
这句话里,been要不要加进去呢?
二、Should you haveany further questions or queries,please feel free to contact me directly.
这句话这样讲对不对呢,should有没有用错?还有feel free有没有用错?