一、have/has been to …:I have never been to Beijing.have/has gone to …:He has gone to Shanghai,so he isn't here now.二、neither/either:①作主语时,可单独使用,也可以与of连用,either,neither接谓语动词一般用单数形式,但这两者在口语中作主语时,其后的谓语动词也可以用复数。例如: Either(of them)is OK. (他们两个中)任何一个都行。 ②作宾语,可单独使用,也可以与of连用,放在动词或介词之后。例如: I don't know which book is the better;I sha...