help me!有请英语爱好者翻译两句话.谢谢!

1.Sir ,I saw you take a grocery shopping thursday afternoon,but you didn't notice me,frankly speaking, I really wanna know how can you take a grocery shopping without english ability.
2.I don't know how to express my idea.
3.Don't interrupt my talk.

1.老师;星期四下午我看到您在街上买菜,可您没看到我.坦白说,我很想知道不会说中文的您如何买菜?

2.我不知道如何表达我的想法.
3.不要打断我说话.
1 sir/madam, i saw you going shopping on thursday afternoon,but you didn't notice me. to be honest, you can't speak chinese, i wonder how can you communicate with others
2 i don't know how to express my ideas
3 could you just let me finish ?ok?