In astronomy the term "red shift" denotes the extent to which light from a distant galaxy has been shifted toward the red, or long-wave, end of the light spectrum by the rapid motion of the galaxy away from the earth.
把E放进来就是： In astronomy the term "red shift" denotes the extent of the shift of light from a distant galaxy toward the red end of the light spectrum by the rapid motion of the galaxy away from the earth。
OG 说by rapid motion 需要一个动词 例如：shifted by the rapid motion
１， the extent到后面找to ---> whenever there is 'extent', it is very likely there is a 'to' somewhere as 'to the extent', like 'in a degree', is an idiom --> 就是考的那个'to'
２， 又by，到前面找passive voice --->look at the 2nd half of the sentence, there is a 'by the rapid motion', u should use passive voice in the first half.
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发表于 2004-2-1 06:57:00
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