【正文】 ral heating system has not been pleted as schedule. You find that it’s your mistake that caused the problem. Write to your client to explain what happened and promise when the project will be finished.You should write at least 150 words.You do NOT need to write your own address.Begin you letter as follow:Dear sir/madam, Dear Mr./Ms. ,I received your litter yesterday plaining that the central heating system in your new house had not been pleted by the date promised. I feel awfully sorry that the problem has been caused by my mistake about the date for pletion on referring to our earlier correspondence.I mistook your date of pletion for next week due to my inattention, so the working team installed the system according to the wrong date. I realize the inconvenience that our oversight must be causing you and will do everything possible to avoid any further delay. I have already given instructions for the work to have priority and the engineers working on the job to be placed on overtime,I assure you that these arrangements should see the installation pleted by next weekend. I hope the settlement of this matter can meet your wishes.The fault is entirely mine and I deeply regret that it happened. Yours faithfully, Johns 道歉與解釋信（Apology and Explanation）道歉信與解釋信一般是合二為一的，先有道歉再來解釋。（2） 詢問詳情。Write a letter of remendation for your former employee to another pany.s dream. But the problem is that their deadline is the day before yesterday, one day before I received your offer.自己曾作出了如何的努力。思路 時間 4.咨詢信請注意委婉的語氣和感謝。發(fā)生的時間，地點(diǎn)，人物，原因。當(dāng)然，寫給親朋好友的信，就不必再打了。(3) 寫給熟悉人的信，也可用頭銜、職位、職稱、學(xué)位等再加姓氏或姓氏和名字。 信件按寫作的目的，分為抱怨信，批評信，建議信，祝賀信，說明解釋信，感謝信，道歉信，推薦信，求職信，聯(lián)絡(luò)信等等，大多數(shù)格式相似。每段書信第一行的第一個字母稍微向右縮進(jìn)些，通常以五個字母為宜，每段第二行從左邊頂格寫起這就是縮進(jìn)式。甚至是只要他們花了錢的，或是政府本應(yīng)該做的，他們就要批評。一般的題目場景有學(xué)生對老師或?qū)W校的道歉，職員對顧客的道歉，鄰居之間，同學(xué)之間的道歉。有什么？費(fèi)用？基本要求？等等。Sample AnswerI am so sorry to refuse your kind invitation. But thanks for you trust in me. 客觀條件如何的苛刻。因此邀請信的重點(diǎn)不僅僅在于簡單的發(fā)出邀請，更在于如何去描述約會的魅力，從而吸引對方赴約。 Dear Mr. Paul:Although I apologized in person for the damage our dog did to your garden the day before yesterday, I want you to know how badly we feel about it and to assure you that it will not happen again.The chain that had secured Ben for the last two years snapped. I was not aware that he was loose until he had dug that hole in the middle of your yard. If you incur any expenses repairing the damage, let us know, and we will cover them. In order to avoid the same accident happening again, we have purchased a new chain just after we realized the problem. So Ben surely will be confined to our yard.Thank you for being a good neighbor and for being patient with us and our dog.Yours sincerely,Tom三 咨詢信（enquiry）在歐美日常生活當(dāng)中，一些不趕時間，且需要書面詳細(xì)答復(fù)的任務(wù)一般都付諸于書信，再加上隨著網(wǎng)絡(luò)的廣泛使用和其速度快的原因，用Email 來查詢信息的現(xiàn)象就更加普及。（1） 介紹背景。職