Teaching aims: 1 To learn new words and expressions and learn how to use them. 2 To learn the usage of the conj.: but , however, although; while Difficult and important points: 1 Get the students to know how to use conj. : 连词but , however, although, while 的用法。 2 The usage of: Words: developing, figure, unfortunate, measure, Phrases: in one’s opinion, make efforts, connect with, close to, as a result