beactiful adj.“美丽”、“漂亮”、“美好”，最普通的词，口语常用。主要表示“给人以美感的”，“给人以愉快、舒服的”，“悦目的、悦耳的”等意思。它着重指样式、色彩“美丽”，有令人爱慕的意思。它一般用来形容女人和小孩。
a beautiful girl
a beautiful scence
beautiful music
Nathan took a last look at his beautiful country.
I am sure you looked beautiful that evening,Mathilde.
pretty 不如beautiful 语气强烈，它不能用来形容男人，常用来形容娇小伶俐的女孩，但可以用来形容男孩。
How pretty the boy is !
You were always a very pretty girl.
handsome “美丽”、“漂亮”、“英俊”，主要指男性“身材均匀，轮廓端正，线条清楚”等。用来形容女人时，一般指健壮和举止大方的美，含有身材匀称，因而产生美的意思。
He is a handsome man with dark eyes and tall nose.
He was a handsome boy with large,bright eyes and blond hair.
lovely adj."美丽" ,"漂亮","可爱",主要指某人或物客观的美,通常用来形容能引起赞美,赞叹等感情的人或物,也常用来形容或女性的容貌.
What a lovely day it is today!
Some people think that this part of Scoltland with its lakes and mountains is more beautiful than the Weat of England.Other people say it is not more lovely,but it is more interesting.
fair"美丽",着重指人的"内心美",表示与内心纯洁,思想高尚,年青等相联系的美,多用于诗歌,
He love the fair girl at frist sight.
good-looking,主要指外貌,只能用来形容人.
She said she had never seen such a good-looking man.
