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题库 / Prep2007E2-SC-131
Today's technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.
small cars more fuel-efficient now than at any time in their
small cars that are more fuel-efficient than they were at any time in their
small cars that are more fuel-efficient than those at any other time in
more fuel-efficient small cars than those at any other time in their
more fuel-efficient small cars now than at any time in
请看讲解视频
形容词修饰歧义，如：We have even more efficient engines than before.是more efficient还是more engines？
C，定语从句中的关系代词 that 或 which 既可以指代单数先行词，也可以指代复数先行词。如：
These are the parcels that are going to be posted. 这些是准备要寄出的包裹。
D，now作时间状语与另一个时间状语比较时，可以省略，因为从语意可以看出是指的现在这个时间。
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