When you meet a foreigner on your trip, and you want to take a photo with her, how to invite her?

What do native English speakers write at the beginning of a letter?

I wanna know weather Minight Noon has already come out? It is one of the books of the twilight saga. Or if it hasn't come out please tell me when it'll come out ?Thanks:D

Please me some words, which has the same meaning in English&American English.Thanks.:D

在英语中，使用and时，前面要用逗号吗？

In English,how to ues a comma?