英语高手进····

1,3,4对;
2错.

1.It really has been a long wait. 常见的用法,really修饰整句,如:I really am sorry.很常见吧,HARRY POTTER邀请秋做舞伴却被秋拒绝时,秋说:I really am sorry.

2.It has been really a long wait. 很遗憾,这个时候因为有个a,really哪能修饰后面的名词啊? 只有 She has been really nice.really可以修饰这个形容词性的nice.

3.It has been a really long wait.这算是三者中最常见的用法,really修饰形容词long.指相当长,老长了.

很不幸,还有第4种
4.It has really been a long wait.此种也很常用,与1类似,真地等了老长时间了.如果换成疑问句就容易理解了 Has it really been a long wait?真的已经经过这么长时间地等待(都等这么久)啊?!!!?

2是对的。

给你举个例子：
It is really hot！
It is really a long trip。

因此
It has been really a long wait.

3)It has been a really long wait.
强调等了很久。

因该第二个是对的，really是副词修饰谓语been（be），放于谓语后；三当中的really要修饰long，字典里没有这种用法。

第二个是对的，因为比较复合语法

(1)语感，2和3 语法不对，3应该是real