三、运用感叹句
感叹句通常用于文章的开头或结尾以便活跃文章气氛，凡是 “ I feel... ” 表达情感类的皆可用感叹句型转换。
（申请信）I am extremely delighted to learn the news that you need a secretary and I am writing to apply for it.
→ 升级表达：How delighted I am to learn the news that you need a secretary and I am writing to apply for it.
四、运用强调句
1. 用 do/does/did 强调一般现在时或一般过去时的谓语动词。
（表达希望） I hope you can accept my apology and understand my situation.
→ 升级表达：I do hope you can accept my apology and understand my situation.
2. 用强调句型。
强调句型 “ it is/was + 被强调部分 +that/who+ 剩余部分” 可以强调除谓语外的任何句子成分。
（感谢信）Your instructive assistance and professional advice enable me to have the precious chance to study in my ideal university.
→ 升 级 表 达：It is your instructive assistance and professional advice that enable me to have the precious chance to study in my ideal university. （强调主语）
五、运用从句
从句主要包括三大从句：名词性从句，状语从句和定语从句。
1. 名词性从句的运用。
名词性从句主要包括：主语从句、 表语从句、 宾语从句和同位语从句。 其中常见的高级表达方式有：What influences/impresses /surprises /disappoints /troubles sb. is ...
（投诉信）Much to my disappointment, they did not pay any attention to my requirements.
→ 升级表达：
（1） What disappointed me was that they did not pay any attention to my requirements. （what 引导的主语从句）
（2） The fact that they did not pay any attention to my requirements disappointed me greatly. （同位语从句）
2. 状语从句的运用。
It was raining hard. We still kept working on the farm.
→ 升 级 表 达 ：Although it was raining hard, we still kept working on the farm. （让步状语从句）
（2016全国卷 III） We can set out early. We will have more time to read and select books.
→ 升 级 表 达：We can set out early so that we will have more time to read and select books. （结果状语从句）
3. 定语从句的运用。
（自我介绍） I am Li Hua and in charge of the English Club in our school.
→ 升级表达： I am Li Hua, who is in charge of the English Club in our school .
（2013全国卷 I）I have asked my uncle to bring you the Chinese painting. You've asked for it before.
→ 升级表达： I have asked my uncle to bring you the Chinese painting （that/which） you've asked for before.
六、运用it句型
it 在句子中充当形式主语或形式宾语，代替真正的主语或宾语。
1. it 作形式主语。
（1） It is +adj./n. + （for sb.） to do sth. /that 从句
it is necessary /important /vital... , it is a great pity /shame...
（2） It is + 过去分词 +that 从句
it is said /believed /well -known /acknowledged /suggested that...
（道 歉 信） I missed such a precious chance. It was a great pity.
→ 升级表达：It was a great pity that I missed such a precious chance.
2. it 作形式宾语。
主语 +find /consider /feel /regard /make +it + adj./n. + （for sb.） to do/doing sth./that 从句。
（申请信） I can speak English fluently, so I find to communicate with foreigners very easy.
→ 升级表达：I can speak English fluently, so I find it very easy to communicate with foreigners.
（建议信） I think that you take part in the class discussion very important.
→ 升级表达 : I think it very important that you take part in the class discussion.
七、运用虚拟语气
虚拟语气用于说话人表达并不是事实的情况，作用是表达假设、 愿望、 怀疑和推测。
（感谢信）Thanks to your selfless help, I finally made great progress in my English.
→ 升级表达
① But for/ Without your selfless help, I wouldn't have finally made great progress in my English.
② If it had not been for your help, I wouldn't have finally made great progress in my English.
（2008全国卷建议信）You should make more Chinese friends to improve your Chinese.
→ 升级表达：If I were you, I would make more Chinese friends to improve my Chinese.
（投诉信） It is time for you to take measures to deal with these problems.
→ 升级表达：It is（high）time that you should take /took measures to deal with these problems.