n	simplified	traditional	pinyin	meaning
1	你	你	ni3	"1: you (informal, as opposed to courteous 您[nin2])
2: you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)"
2	好	好	hao3	"1: good
2: (before a verb) good to"
3	您	您	nin2	1: you (courteous, as opposed to informal 你[ni3])
4	你好	你好	ni3 hao3	1: hello; hi
5	您好	您好	nin2 hao3	1: hello (polite)
6	对不起	對不起	dui4 bu5 qi3	1: I'm sorry; excuse me; I beg your pardon
7	没关系	沒關係	mei2 guan1 xi5	1: it doesn't matter