while doing用法的问题请教

cathy_ly

117. Performing a risky maneuver that required precision flying, not only did space shuttle astronauts retrieve an orbiting satellite, it was done simultaneously while avoiding being rear-ended by a passing ultraviolet telescope.

A. not only did space shuttle astronauts retrieve an orbiting satellite, it was done simultaneously while avoiding

B. not only was an orbiting satellite retrieved by space shuttle astronauts, but they also simultaneously avoided

C. an orbiting satellite was retrieved by space shuttle astronauts who also avoided simultaneously

D. space shuttle astronauts retrieved an orbiting satellite, simultaneously while avoiding

E. space shuttle astronauts retrieved an orbiting satellite and simultaneously avoided
            

 

A: not only … it … 不对称

B: they 和satellite不一致；performing修饰satellite错

C: 同上

D: while不对，应该是并列关系不是转折

E: correct

 

注意：

1、             not only did A/As do, but it/they also do

2，while表转折让步时才能省略主语和系动词，表示当。。。时不能省略

第二个注意条目正确吗？我怎么觉得好像有问题，请看PREP 115 题（如下），B答案的while speeding 不就是“ 当。。。的时候”吗？ 一样采用了省略的方式。

有些糊涂了。

115. Meteor showers and individual streaks of light that flash across the sky every night are generated when tiny flecks of celestial detritus, often no larger than grains of sand or of pebbles, burn up speeding through the atmosphere.

A. grains of sand or of pebbles, burn up speeding

B. grains of sand or pebbles, burn up while speeding

C. grains of sand or pebbles, which burn up while speeding

D. a grain of sand or pebble, which burns up as it speeds

E. a grain of sand or a pebble, burns up when it speeds

 

A: grains 应该和 pebbles平行，而不是从属关系；speeding 应该修饰flecks

B: correct

C: when从句没谓语

D: 同上

E: burns应该用burn；it指代错

 

115. Meteor showers and individual streaks of light that flash across the sky every night are generated when tiny flecks of celestial detritus, often no larger than grains of sand or of pebbles, burn up speeding through the atmosphere.

A. grains of sand or of pebbles, burn up speeding

B. grains of sand or pebbles, burn up while speeding

C. grains of sand or pebbles, which burn up while speeding

D. a grain of sand or pebble, which burns up as it speeds

E. a grain of sand or a pebble, burns up when it speeds

 

A: grains 应该和 pebbles平行，而不是从属关系；speeding 应该修饰flecks

B: correct

C: when从句没谓语

D: 同上

E: burns应该用burn；it指代错

 

cathy_ly

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