How nice to hear from you again.
Let me tell you something about the activity.
I’m glad to have received your letter of Apr. 9th.
I’m pleased to hear that you’re coming to China for a visit.
I’m writing to thank you for your help during my stay in America.
With best wishes.
I’m looking forward to your reply.
I’d appreciate it if you could reply earlier.
导入：第1段：Recently we’ve had a discussion about whether we should...(导入话题) Our opinions are divided on this topic.(观点有分歧)
正文: 第2段：Most of the students are in favour of it.(正方观点) Here are the reasons. First... Second... Finally...(列出2~3个赞成的理由)
第3段：However，the others are strongly against it. (反方观点)Their reasons are as follows. In the first place... What’s more... In addition...(列出2~3个反对的理由)
结论： 第4段：Personally speaking，the advantages overweigh the disadvantages，for it will do us more harm than good，so I support it.(个人观点)
导入：第1段：提出一种现象或某个决定作为议论的话题 As a student，I am strongly in favour of the decision. (亮明自己的观点是赞成还是反对)The reasons for this may be listed as follows. (过渡句，承上启下)
正文：第2段：First of all... Secondly... Besides...(列出2~3个赞成或反对的理由)
结论：第3段：In conclusion，I believe that... (照应第1段，构成"总—分—总"结构)
导入：第1段：Some people hold the opinion that A is superior to B in many ways. Others，however，argue that B is much better. Personally，I would prefer A because I think A has more advantages. 正文：第2段：There are many reasons why I prefer A. The main reason is that ... Another reason is that...(赞同A的原因)
第3段: Of course，B also has advantages to some extent... (列出1~2个B的优势)
结论：第4段: But if all these factors are considered，A is much better than B. From what has been discussed above，we may finally draw the conclusion that ...(得出结论)
The chart gives us an overall picture of the 图表主题. The first thing we notice is that 图表最大特点. This means that as (进一步说明).
We can see from the statistics given that 图表细节一 . After 动词-ing 细节一中的第一个变化，the动词-ed+幅度+时间(紧跟着的变化) .
The figures also tell us that图表细节二. In the column，we can see that accounts for (进一步描述). Judging from these figures，we can draw the conclusion that (结论).
The reason for this， as far as I am concerned is that (给出原因). / It is high time that we (发出倡议).
Look at this picture./The picture shows that.../From this picture，we can see.../As is shown in the picture.../As is seen in the picture...
As we all know， .../As is known to all，.../It is well known that.../In my opinion，.../As far as I am concerned，.../This sight reminds me of something in my daily life.
In conclusion.../In brief.../On the whole.../In short.../In a word.../Generally speaking.../As has been stated...