不定式作狀語

　　注意作狀語的動詞不定式要與其邏輯主語在意義上和數(shù)上的一致。

　　1、表示目的

　　22) its plans to promote disarmaments,the party has decided to establish a campaign headquarters with Benjamin Seaman as its leader.

　　[A]Although[B]To carry out[C]Except that[D] Make

　　23) pure lead,the lead ore is mined,then smelted,and finally refined.

　　[A] Obtaining[B] Being obtained[C] To obtain[D] It is obtained

　　24) When they met,Leonardo and his enemy were fighting.

　　[A]killed each other[B]killing each other[C]to be killed each other

　　[D]to kill each other

　　表示原因

　　It's very kind of you to say so. / I am pretty pleased to hear the news that you are elected as the president of the club. / I'm sorry to interrupt you. / They are quite surprised to see the great changes taking place in the area.