[A] earn
[B] earned
[C] to earn
[D] was earned
2) On his return from his college, he found the house .
[A] deserting
[B] deserted
[C] desert
[D] to be deserted
3) The age [A] of a geological sample can be estimated [B] from the ratio of radioactive to nonradioactive carbon present [C] in the object is examined [D] .
三、用作状语的-ED分词
这样的-ED分词通常来自及物动词。-ED分词用作状语时,跟-ING分词作状语时一样,修饰主句的谓语动词,意义上相当于状语从句,表示时间,条件,原因,伴随状况等。-ED分词结构作状语,前边往往可以加when,while,if,as if,though。这时,我们可以把-ED分词结构理解为一个省略句,即省去了“主语和be的变化形式”。一般说来,这种结构的逻辑主语必须与主句的主语一致。
1. 表示时间
4) Inaugurated a second time on March 4, 1901, focused on domestic rather than oreign policies.
[A] William McKinley’s new term looked forward to and
[B] the new term looked forward to William McKinley and
[C] looking forward to a new term was William McKinley
[D] William McKinley looked forward to a new term
2. 表示条件
5) under a microscope,a fresh snowflake has a delicate sixpointed shape.
[A] Seen
[B] Sees
[C] Seeing
[D] To see
6) to steel,chromium(铬) increases the metal’s hardness.
[A] Added
[B] In
1) A错。 改为his。
2) B错。 改为its。
3) D错。 改为their。
二、例题解析
1) B错。 改为themselves。
2) B错。B处明显指代animals,而它前面的主语that却指代shells,也就是说“that”和“themselves”指的不是同一事物。由于主语与宾语不是同一物,故不能用反身代词,应改为宾格them。
3) C错。本句的主语为aptitude,而非Benjamin Banneker(在这里它作aptitude的定语),而C处的代词却指上文提到的人名“Benjamin Banneker”,由于主语与宾语并非指同一人,故不能用反身代词,应改用宾格him。
4) D错。 改为to him。动词“presented”的(逻辑)主语是“evidence”,而不是A处的“he,”所以D“himself”处与C处“presented”的主语“evidence”不一致,所以不能用反身代词。
5) B错。 改为him。同上。