星級典句:
第一句: Can I buy some stamps and envelopes here?
這兒賣郵票和信封嗎？
A: Can I buy some stamps and envelopes here?
這兒賣郵票和信封嗎？
B: Yes. How many stamps and envelopes do you want to buy?
是的。您要買幾張郵票和幾個信封？

第二句: Could you tell me where I can get the registered envelope and some stamps?
請告訴我在哪兒能買到掛號信封和郵票？
A: Excuse me. Could you tell me where I can get the registered envelope and some stamps?
請問我在哪兒能買到掛號信封和郵票？
B: At that counter.
在哪個柜臺。

其他表達法:
IThe envelpe was firmly sealed.
這個信封封的很嚴實。
Please address the envelope before mailing the letter.
寄信前，請在信封上寫上地址。