01 do you understasnd?                 wakari masuka?
02 do you understasnd english?         eigo ga wakari masuka?
03 yes.                                hai.
04 yes, i do.                          hai. wakarimasu.
05 no.                                 i-i-e.
06 no, i don't.                        i-i-e. wakarimasen.

07 please say again.                   moo ichido itte kudasai.
08 please speak slowly.                motto yukkuri itte kudasai.

09 i'm sorry.                          gomen nasai.
10 i'm sorry.                          sumi-masen.
11 i see./i've got it.                 soo desuka.