Excuse me. 對不起,
Excuse me, are you Sarah Willson? 對不起,請問你是Sarah Willson嗎?
Excuse me, could I have some water, please? 對不起,可以要杯冰開水嗎?
Be careful, those are heavy. 小心, 那些蠻重的。
Hello, can you help me? 嗨,可以請你幫個忙嗎?
Could you give us a hand, please? 可以請你幫個忙嗎?
Could you do me a favor? 可以請你幫個忙嗎?