Good news! The price of all those second-hand goods is ________ before.

A．30% as lower as

B．30% lower than

C．lower 30% than

D．a(chǎn)s 30% low as

 

【答案】

B

【解析】

試題分析：倍數(shù)的表達：倍數(shù) + as + 形容詞或副詞的原級 + as + 其他；倍數(shù) + 形容詞（或副詞）的比較級 + than + 其他；倍數(shù) + the size / height / length / width. etc. + of + 其他。句意：好消息！這些所有的二手商品的價格比之前低30%。

考點：倍數(shù)問題

點評：掌握倍數(shù)問題的固定結(jié)構(gòu)：比如表示A是B的幾倍長（寬，高，大，重等）” ：

1.“A + be + 倍數(shù) + as + 計量形容詞原級 + as + B”。如： This tree is three times as tall as that one.  His father is twice as old as he. 

2.“A + be + 倍數(shù) + 計量形容詞比較級 + than + B ”。如： The dictionary is exactly five times more expensive than that one. 

3.“A + be + 倍數(shù) + the + 計量名詞 + of + B ”。如： The newly broadened square id four times the size of the previous one. 

4.“The + 計量名詞 + of + A + be + 倍數(shù) + that + of + B ”如： The size of the newly broadened square is four times that of the previous one.

 

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