盡管是中國最有名的科學家之一,但袁隆平仍然認為自己是個農民,因為他在田間耕作,進行科學研究.
此句是一個復合句結構.主句是由for 連接的兩個并列分句,前一個分句為Yuan Longping considers himself a farmer；后一個分句為for he works the land to do his research ；從句為although引導的讓步狀語從句,即：Although he is one of China’s most famous scientists.
for引導的分句通常對前一個分句所說的話加以解釋,提供判斷的理由.多用于書面語,一般和前面的分句用逗號隔開.如：
The day breaks,for the birds are singing.天亮了,因為鳥在歌唱.
It must be snowing,for it is so bright outside.外面這樣亮,一定在下雪.