【正文】
常見的論證方法有舉例法、因果法、對比法等等,可參見英語議論文的有關(guān)章節(jié)。 2)提出論題 由于演講的時間限制,必須開門見山,提出論題。 it is the freshness of the deep springs of life . youth means a temperamental predominance of courage over timidity of the appetite , for adventure over the love of ease. this often exists in a man of 60 more than a boy of 20 . nobody grows old merely by a number of years . we grow old by deserting our ideals. years wrinkle the skin , but to give up enthusiasm wrinkles the soul . worry , f