In the process of understanding: If she can speak English, why not? For any communication, you want to get your message across to your audience. In her speech, she pronuciated clearly, even though with some stutter - talk with continued involuntary repetition of sounds, especially initial consonants. I admire her courage to speak in non-native language, a way to show her sincerity to the world for a better life for women and children.
On top of everything else, sincerity is the most effective to convey your thought. As a top tier singer, she knows that well. Her training in singing serves well in speaking English.
You gotta listen to her speech to know what the heck I'm talking about, as below.
Chinese First Lady Peng Liyuan Delivers a Speech about Women and Education at UN GA 2015
It gives me a great pleasure to join you for this important initiative as the UN marks its 70th anniversary.
Education is very close in my heart. My father grew up in a very small village in China. In those days, not many villagers could read. So my father opened a night school to teach them how to read. With his help, many people learned to write their own names; with his help many people learned to read newspapers for the first time; with his help, many women were able to teach their children how to read.
As his daughter, I know what education means to the people, especially those without it. After generations of hard work, China has come a long way in education. I myself am a beneficiary of that progress. Otherwise I would never become a soprano and a professor of musical.
I am following my father’s footsteps by teaching at China’s Conservatory of Music to help continue China’s success story. I want to thank Director-General Bokova and UNESCO for naming me the Special Envoy for Women and Girls Education. I am truly honored to work with the UN and do something about Global Education. I have visited many schools around the world. I’ve seen first-hand on how much we can do for education.
Education is about women and the girls. It is important for girls to go to school because they will become their children’s first teacher someday. But women still account for over half of the world’s poor in population and 60% of adults who can’t read.
Education is crucial in the addressing such inequalities. In China, Spring Bud Education Program has helped over 3 million girls go back to school. Many of them have finished university education and they are doing well at work.
Education is about equality. In poor countries and regions the number of school dropouts is astonishing. We call for more educational resources to these places.
Education is about the young people. Young people are the future. Education is important because it not only gave young people knowledge and skills but also help them become responsible citizens. As the UNESCO special envoy and the mother myself my commitment to education for all will never change.
Many years ago my father made a small difference in his village. Together we can make a big difference in the world. I was once asked about my Chinese dream. I said I hope all children especially girls can have access to good education. This is my Chinese dream. I believe one day education first will no longer be a dream, it will be a reality enjoyed by every young woman on this planet.
(391 bytes) (42 reads) 09/28/2015 postreply 10:34:59 
別忘了她是中國首個聲樂碩士
個人很喜歡彭，她講英文很可愛！
比如常說我的洋朋友這樣說，那樣說，說明不單說英語好， 聽力也非常好，要是老公是洋帥哥就更厲害了， 連叫床也用英語， 同胞不能比的。
另一方麵，中國大陸人英語普遍不好，除了語言本身的差異以外，
說明我們的英語教育走進了一些彎路沒出來。
一向認為英語和其它所有語言一樣,工具,溝通的工具那是.
流利--大部分是指口語,有的時候涵蓋演講(即公開講話),這裏麵的技巧實在是多.
社交性質的"交談",這流利就表現出來了.讓聽的人感到輕鬆,容易領會,反應快捷,表達清晰,這些全部都是要點.
文化上的不自信,是大部分國人的病根.
第二，彭麗媛在聯大說英語，與習近平在聯大說中文，兩者根本就不是一回事。習近平是國家元首，代表中國，他在聯大說中文理所當然；而彭麗媛雖然是習近平夫人，基督教文化屬於一，共產黨文化屬於二，但主要還是作為客人。中國客人造訪美國，在人家國家說英語，乃是對東主國的尊重。
第三，美國人沒有嘲笑別人英語發音和語法不正的習慣，不似咱們假正經的加拿大保皇黨人，小布什總統的語法，大多數college和university裏學生的寫作水平，都不如移民。英國，德國，俄國，美國，大學者講課，大官們辯論，從來說話都很慢，有時候就是一個單詞一個單詞地往外蹦。
別忘了，中國現如今不僅要秀錢包，還要精神輸出，文化輸出，因此中文要向全世界大聲地講，大聲音地說！
就連英國財相近日為討好中國都給他們的教育部發一大筆錢讓他們的小學生普及中文教育，
我們的第一夫人為什麽要在聯大勉強秀英文呢？實在低估了國家（錢）的強大與自己的地位。
正如 “ linna118 ” 網友所說，我們喜愛彭麗媛，但美中不足是她身邊有一個出 “餿主意” 的高參。
對彭麗媛是說英語對，還是說漢語對的問題，誰都有不同看法，無所謂誰對誰錯，所以不該涉及對寫此類博客的博主進行沒有道理的攻擊，什麽時候人們都能就事論事而非上綱上線，人與人之間的關係就會平和很多。
讚這樣因為有鮮明觀點而有了議論價值的博客。
設想一下，要是在美國偶遇一位異國人士能說一些洋腔洋調的中文和你交流，你還會去挑毛病？隻會覺得那個人很不錯，會講中文。語言是一個工具，不是拿來表演的。