1.pardon,please.意思是麻烦重复一遍,一般老外就会再说一遍,并且会很慢.
2.sorry,i can't understand what u said, my english is poor(not good也可以)
3.sorry, i am not good at english, could u speak slowly?意思就是我英语不好,你可以讲慢些么?