五、不定式作状语
注意作状语的动词不定式要与其逻辑主语在意义上和数上的一致。
(一)表示目的
- _____ 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 - _____pure lead，the lead ore is mined，then smelted，and finally refined.
［A］ Obtaining
［B］ Being obtained
［C］ To obtain
［D］ It is obtained - 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
(二) 表示结果，在这种情况下，不定式的逻辑主语也是全句的主语
He must be cripple not to walk by himself./It seems that the employee didn't sleep at all to be so sleepy in the early morning. / What have I done for you to deserve such an amount of money?
还有固定搭配的不定式表示结果：so...as to; such(...) as to ...; enough to...; too...to...; in order to ... 等
We have got so plenty of food as to treat our guests./ Is that room big enough to seat all of us?/ He is too young to fit that job.
(三) 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.
(四) 伴随状况
- Certain ［A］ minerals are magnetic and are able to detected ［B］ by instruments that measure ［C］ differences in the Earth's magnetic fields ［D］ .
在下列表示能力、愿望、倾向等语义的形容词后边也要接不定式：able(但其同义词" capable"后面要接"of+动名词")，anxious, eager, glad, inclined(倾向于)，liable, likely, pleased, ready等。
