While作并列连词用,意思为“而,然而”,表对比.而but表转折.注意用心比较体会while与but的句中用意 1.Some people waste food while others haven't enough.有些人很费粮食,然而有些人却吃不饱.2.The son was having ... While作并列连词用,意思为“而,然而”,表对比.而but表转折.注意用心比较体会while与but的句中用意 1.Some people waste food while others haven't enough.有些人很费粮食,然而有些人却吃不饱.2.The son was having ...