I am writing in response to your advertisement in …
I am writing to express my interest in…
I would like to apply for …
Thank you for considering my application. I am looking forward to meeting you in the near future.
Your prompt response will be much appreciated.
I should be pleased to attend for an interview at your convenience, when I could give you further details concerning myself.
I feel something should be done about…
I am writing to inform you that I find…unsatisfactory…
I would be very grateful if you could look into the matter as soon as possible. And I am looking forward to an early reply.
I believe you will take my complaints seriously, I would ask you to give back my money, or I would file my complaint to the authorities concerned.
On behalf of…, I have the honor to invite you to…
It is with the great pleasure that I write to cordially invite you to…
I do hope that you will be able to come.
We should be very pleased if you could honor us with your company.
I was very happy to learn that …
I was very delighted to hear the news that…
It is with great pleasure that I hear of your success. Please accept my warmest/heartiest congratulations.
Allow me to convey my congratulations on your promotion to …
I wish you success and fulfillment in the years ahead.
May each succeeding year bring you greater happiness and prosperity.
I am writing to extend my sincere/hearty gratitude/appreciation for…
I would like to convey in this letter my heartfelt thanks to you for…
Again, I would like to express my warm thanks to you! Please accept my gratitude.
Thanks again and I hope that I will have the opportunity to return/ repay your kindness.
This paper/thesis/composition mainly discusses/aims at/ focuses on/ centers on …( 主题/主旨). The author first lists/states/argues… Then he /the paper analyses/illustrates/supports…from … (几个) aspects./ To conclude them, … Above all, … Besides, … What’s more/ Finally, … The paper finally ends with/ comes to a conclusion that…
环保类：可用关键词，如碳减排carbon emission reduction，可再生能源renewable energy，世界环境日World Environment Day，小排量汽车small-displacement/ small-engine vehicles。
经济类：可用关键词，如经济危机 economic crisis/ financial crisis，应对危机face the crisis， fight crisis，扩大内需propel／drive/expand domestic demand，适度宽松的货币政策moderately loose monetary policy。
交通类：可用关键词，如公共交通线路网public transport network，交通管制traffic control，交通高峰期rush hour，交通拥堵traffic jam/congestion, heavy traffic。