Translation:Can you come to my birthday party?
As the name speaker of English I am actually happy to have a Chinese speaker find the same problems with Duolingo that I do. They lack flexibility. They're just a program. I guess I will excuse them in that they can't lecture... They can't give grammar the way they're set up, and they can't give variant meanings of vocabulary entries when they introduce them. If it makes you feel any better I have seen them actually refine their Chinese from the beginning to this point in certain areas. Everybody relax and perhaps be glad that we're not doing with some future dystopian AI . It's not playing with us it's just not very well written.
No, it can't but this site will give u more info about. I advise u to check it out.