用英语写一封信给tim。问他是否愿意租房子给李明？开头称谓应该是什么？

用英语写一封信给tim。问他是否愿意租房子给李明？

Dear Tim,

My friend Li Ming is looking for an apartment recently. I think your apartment will be a good choice for him. Li Ming is working for a lawfirm and his work is very stable. FYI he is single, so he won't make any party noise when he is at home. He want to rent the house at least 3 years, because his lawfirm is quite near to your place. And he renew the contract with the company for another 3 years just now. Is there any chance we can visit your apartment?

开头称谓应该是什么？

Dear sir or madam。 称呼是写信人对收信人的称呼用语。位置在信内地址下方一、二行的地方，从该行的顶格写起，在称呼后面一般用逗号（英国式），也可以用冒号（美国式）。 1、写给亲人、亲戚和关系密切的朋友时，用Dear或My dear再加上表示亲属关系的称呼或直称其名（这里指名字，不是姓氏）。例如：My dear father，Dear Tom等。

2、写给公务上的信函用Dear Madam，Dear Sir或Gentleman（Gentlemen）。注意：Dear纯属公务上往来的客气形式。Gentlemen总是以复数形式出现，前不加Dear，是Dear Sir的复数形式。