I have just received an invitation from a good friend of mine.asking me to pay a visit towhere we used to study together.为什么用where?

解释句子成分:I have just received a letter from my brother.为什么just放在received前? 句子辨析:I have just received a letter from my brother,Tim.I have just received a letter from my brother,Tim.I just have received a letter from my brother,Tim.两句是否一样.第二句just在前, I have just received a letter from my brother.（同义句）=I have just ____ ____ my brother. I,a,letter,have,uncle,my,from,just,received,造一个句子. I have just received you letter这句话中you错了该改为什么? i just won the match i have just received a letter from my brother为什么一个有have 一个没有have呢 I'VE RECEIVED YOUR LETTER JUST NOW i have just received Tim's letter 这句可行?与 i hvae just received a letter from my brother, Tim如果上句可行与这句意思相同吗? I have just received a letter from my brother,Tim.其中have不能省略吗?什么情况下用have,可以的话希望总结下规律. I have received it thanks.是什麼意思? I have been received your letter 和 I have received your letter有何区别? Just received notice that Just received notice that our psychological drama into school-class final,I'm very gratified I have not received my pay yet为什么用have I have just received an invitation from a good friend of mine.asking me to pay a visit towhere we used to study together.为什么用where? I have just received a letter from my old school ,infrming me that my former headmaster will be retiring next week , I have just received a letter from my brother ,tim 一定要用完成式吗?出自新概念第二册第四课用 I just received a letter from my brother或 I just receive a letter from my brother 不行吗我怎么感觉 新概念第二册 不少完 i revceived和i have received这两句有什么区别啊? 我刚刚收到弟弟蒂姆的来信i have just received a letter from my brother,tim.为什么不是i had just receive a letter from my brother,tim.我英语不好 希望细细的讲解