中考英语语法详解六：动词

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

　　[D]to kill each other

　　2. 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.

　　3. 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.

　　4. 伴随状况

　　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。

　　25) Certain [A] minerals are magnetic and are able to detected [B] by instruments that measure [C] differences in the Earth's magnetic fields [D]