If you want to lose weight, you should not take such food ______ really necessar

游客2023-11-20  43

问题 If you want to lose weight, you should not take such food ______ really necessary.

选项 A、as is
B、as it is
C、as it was
D、as was

答案 A

解析 这里选A,因为as与such常常连用,同时该词又具有关系代词的功能。在本句这个特定的句型里,就应用as is necessary。有时,可以把这个句型看作是从as it is necessary中省略了代词it而转变过来的。但是,如果这里就用as it is necessary,虽然符合语法,却不符合习惯用法。因为代词as可以在句子里既引导从句又可以担任从句中的主语。
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