第一句: I was very concerned when I received your letter yesterday.
我对昨天你的来信非常关心。
A: I was very concerned when I received your letter yesterday complaining that the central heating system in your new house had not been completed by the date promised.
昨天收到你的来信，抱怨你新家的中央供暖系统未按规定时间装好，对此我非常关心。
B: What's that?
那时候什么？
A: A letter of apology.
一封道歉信。
第二句: We are sorry we cannot send you immediately the catalogue and price list.
对您所要的目录和价格单，很抱歉不能马上过去。
A: We are sorry we cannot send you immediately the catalogue and price list for which you asked in your letter of March 10.
来信所要的目录和价格单，很抱歉不能马上过去。
B: Why?
为什么？
A: Supplies are expected from the printers in two weeks and as soon as we receive them, we will send you a copy.
印刷商两周后供货，一旦收到，我们将给您寄去一份。
其他表达法:
Dear Mr./Ms,
I was very concerned when I received your letter yesterday complaining that the central heating system in your new house had not been completed by the date promised.
