我写的这句英语，语法有错误吗？

Question

Where is the article I have seen?(这里需要be动词吗)
I think I have seen it is in her QQ space(同样，这里要加be动词吗), and it is very sad article.
我要表达的中文意思是：
我在哪里见过这篇文章？
我想我在她的QQ空间见过，这是一篇伤感的文章。

请大家告诉我，写得对不对,请指证!

Answer 1

Where is the article I have seen?这句话正确
这里where is the article 是主句 而 i have seen是定语从句的部分 前面省略了连词that/which 因为是指代宾语 所以可以省略
I think I have seen it is in her QQ space, and it is very sad article.
此句中 要把前半句的is 去掉 因为
I think I have seen it 是一完整的部分 而in her QQ space是做介词状语 表示在那里 去掉它也不影响句子 但它 起到补充说明 的作用
而后半句中 要加冠词！it is a very sad article.

Answer 2

第二句第一个IS去掉,第二个IS后加一个A本回答被提问者采纳

Answer 3

I think I have seen it is in her QQ space，这句话里的is应该去掉。

Answer 4

第二句IS要去掉